L 18 Thermodynamics [3] Heat flow. Conduction. Convection. Thermal Conductivity. heat conduction. Heat transfer

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "L 18 Thermodynamics [3] Heat flow. Conduction. Convection. Thermal Conductivity. heat conduction. Heat transfer"

Transcription

1 L 18 Thermodynamics [3] Heat transfer convection conduction emitters of seeing behind closed doors Greenhouse effect Heat Capacity How to boil water Heat flow HEAT the energy that flows from one system to another because of temperature differences. But how does it flow? Three ways: convection conduction Convection heat is carried from place to place by the bulk movement of either liquids or gases does not apply to solids when water is boiled, hot liquid rises and mixes with cooler liquid, thus the heat is transferred Hot air rises: want heat into lower level of house (winter) cooled air into upper levels (summer) Conduction heat is transferred directly through a material, with no bulk movement of stuff only energy moves iron is a particularly poor conductor of heat heat conduction HOT L Heat Flow Cross sectional area A Heat Flow rate depends on A / L COLD The effectiveness of a material in conducting heat is characterized by a parameter called the thermal conductivity there are good thermal conductors (metals) and poor ones (insulators) Thermal Conductivity Material Copper Silver Steel (stain.) wood glass wool Goose down styrofoam Thermal conductivity

2 Thermal Conductivities of Metals Grandma s silver spoons Metal Silver Copper Aluminum Brass Iron Steel Thermal Conductivity (W/m K) electromagnetic spectrum Radiation is the heat transfer by electromagnetic waves thermal light waves - invisible to the eyes thermal is a small part of the electromagnetic spectrum waves are characterized by their frequency or wavelength different colors in the visible correspond to different wavelengths from red to blue TV radio waves microwaves, cell phones visible thermal x-rays visible electromagnetic waves: LIGHT shorter wavelength more energy thermal visible light UV produces sunburn Thermal Radiation The warmth you feel from the sun is the sun s thermal It travels through the vacuum of space to reach earth, no material is necessary (takes 8 minutes) you can feel its effects even though you cannot see the. you can feel the thermal from a fireplace 2

3 What produces thermal? all objects whose temperature is above absolute zero emit thermal The hotter the object, the more it emits, the amount of is ~ T 4 We all continuously emit thermal We also absorb it from objects and people around us If we just emitted we would eventually cool to absolute zero! Emission and Absorption are balanced Thermal spectrum The intensity of increases with temperature the color shifts toward the blue at higher temperatures The UV from the sun is just beyond the violet (11,000 F) sources of thermal the incandescent light bulb ( the ones that have a filament) are sources of both visible light and heat. when electricity flows through a wire it gets hot. it emits even though you can t see it as it gets hotter it glows red then orange then white evacuated glass bulb tungsten filament, can get very hot and not melt Radiation emitted by hot objects The hotter they are, the more they emit the efficiency with which an object emits thermal is characterized be a parameter called its emissive e e is a number between 0 and 1 a good emitter has an e close to 1 a poor emitter has an e close to 0 good emitters are good absorbers an object that is a good emitter is also a good absorber of thermal a poor emitter is also a poor absorber generally dark, dull objects are the best emitters/absorbers shinny objects are poor emitters/absorbers If you do not want the edges of your pie to burn, you wrap it in aluminum foil 3

4 good/bad emitters-leslie s cube copper cube filled with hot water this side is painted black infrared sensor Practical considerations wear light clothing in summer light clothing absorbs less sunlight cover all body parts in winter warm body parts (like your head) emit thermal all objects that are at a temperature above absolute zero emit thermal (waves) the higher the temp, the more they emit the color (wavelength) of the emitted waves goes from red orange yellow blue as the temperature increases seeing behind closed doors we can see behind closed doors because of the heat signature left by warm objects on walls Infrared sensors can pick up temperature differences of 0.05 degrees C. Which one is best? A.silvered B. silvered and un-evacuated C. evacuated D.un-silvered and un-evacuated The Greenhouse effect infrared is trapped C O 2 Sun s visible light 4

5 Greenhouse effect the sun s visible light can penetrate through the atmosphere to the earth s surface where it heats it the visible light energy is converted to thermal light energy the thermal is reflected from CO 2 in the atmosphere Greenhouse effect concentrations of CO 2 have been increasing rise in earth s temperature same effect occurs in your car during the day. The ozone layer ozone, O 3 is a naturally occurring trace element in the atmosphere It absorbs solar ultraviolet, especially the harmful UV-B rays it is destroyed by Cfc s (chlorofluorocarbons) loss affects us and environment How do I boil water? How much heat does it take to boil water? Simpler question how much heat is required to raise the temperature of water by so many degrees? The answer depends on how much water you have and how hot you want to get it The answer would be different for a different material, say aluminum. Heat Capacity or specific heat hot plate The heat capacity is the amount of heat that is required to raise the temperature of 1 g of a substance by 1 degree C. it is measured in Calories for water it is 1 cal/g C heat Q = m c temp change Some heat capacities Substance Specific heat in cal/g C water 1 Ethyl alcohol 0.58 Steel 0.11 Aluminum mass of sample specific heat lead

PHYS:1200 LECTURE 18 THERMODYNAMICS (3)

PHYS:1200 LECTURE 18 THERMODYNAMICS (3) 1 PHYS:1200 LECTURE 18 THERMODYNAMICS (3) This lecture presents a more detailed discussion of heat flow by radiation and its importance in the physics of the atmosphere. We will discuss some important

More information

Exercises Conduction (pages ) 1. Define conduction. 2. What is a conductor?

Exercises Conduction (pages ) 1. Define conduction. 2. What is a conductor? Exercises 22.1 Conduction (pages 431 432) 1. Define conduction. 2. What is a conductor? 3. are the best conductors. 4. In conduction, between particles transfer thermal energy. 5. Is the following sentence

More information

Topic 5 Practice Test

Topic 5 Practice Test Base your answers to questions 1 and 2 on the diagram below, which represents the greenhouse effect in which heat energy is trapped in Earth's atmosphere 1. The Earth surface that best absorbs short-wave

More information

Heat Transfer. Conduction, Convection, and Radiation. Review: Temperature

Heat Transfer. Conduction, Convection, and Radiation. Review: Temperature Heat Transfer Conduction, Convection, and Radiation Review: Temperature! Temperature is:! The quantity that tells how hot or cold something is compared with a standard! A measure of the average kinetic

More information

Heat and Temperature

Heat and Temperature Chapter 4 Heat Heat and Temperature Heat is a form of energy Heat is the energy of random motion of molecules constituting the body. It flows from a hot body to a cold body. Unit of heat is joule (J) and

More information

Chapter 6. Heat is transferred from one place to another by three different processes

Chapter 6. Heat is transferred from one place to another by three different processes Chapter 6 Heat is transferred from one place to another by three different processes 6.1 How Heat is Transferred I. Conduction P Conduction is the transfer of energy through matter from particle to particle.

More information

Introduction to Electromagnetic Radiation and Radiative Transfer

Introduction to Electromagnetic Radiation and Radiative Transfer Introduction to Electromagnetic Radiation and Radiative Transfer Temperature Dice Results Visible light, infrared (IR), ultraviolet (UV), X-rays, γ-rays, microwaves, and radio are all forms of electromagnetic

More information

Energy, Temperature, & Heat. Energy, Temperature, & Heat. Temperature Scales 1/17/11

Energy, Temperature, & Heat. Energy, Temperature, & Heat. Temperature Scales 1/17/11 Energy, Temperature, & Heat Energy is the ability to do work (push, pull, lift) on some form of matter. Chapter 2 Potential energy is the potential for work (mass x gravity x height) Kinetic energy is

More information

Conduction is the transfer of heat by the direct contact of particles of matter.

Conduction is the transfer of heat by the direct contact of particles of matter. Matter and Energy Chapter 9 energy flows from a material at a higher temperature to a material at a lower temperature. This process is called heat transfer. How is heat transferred from material to material,

More information

1. How much heat was needed to raise the bullet to its final temperature?

1. How much heat was needed to raise the bullet to its final temperature? Name: Date: Use the following to answer question 1: A 0.0500-kg lead bullet of volume 5.00 10 6 m 3 at 20.0 C hits a block that is made of an ideal thermal insulator and comes to rest at its center. At

More information

PHYSICS 231 INTRODUCTORY PHYSICS I

PHYSICS 231 INTRODUCTORY PHYSICS I PHYSICS 231 INTRODUCTORY PHYSICS I Lecture 17 Heat: Q = Energy transferred due to microscopic contact Recap - Heat Transfer Heat can: Change temperature Q = mc!t c = specific heat For water: c= 1.0 cal/(g

More information

JSUNIL TUTORIAL,SAMASTIPUR PH: CBSE Class-7 Science Heat and temperature solve questions and Notes

JSUNIL TUTORIAL,SAMASTIPUR PH: CBSE Class-7 Science Heat and temperature solve questions and Notes CBSE Class-7 Science Heat and temperature solve questions and Notes Fill in the blanks : (a) The hotness of an object is determined by its temperature. (b) Temperature of boiling water cannot be measured

More information

The Kinetic Theory of Matter. Temperature. Temperature. Temperature. Temperature. Chapter 6 HEAT

The Kinetic Theory of Matter. Temperature. Temperature. Temperature. Temperature. Chapter 6 HEAT The Kinetic Theory of Matter Hewitt/Lyons/Suchocki/Yeh Conceptual Integrated Science Chapter 6 HEAT Kinetic Theory of Matter: Matter is made up of tiny particles (atoms or molecules) that are always in

More information

2,000-gram mass of water compared to a 1,000-gram mass.

2,000-gram mass of water compared to a 1,000-gram mass. 11.2 Heat To change the temperature, you usually need to add or subtract energy. For example, when it s cold outside, you turn up the heat in your house or apartment and the temperature goes up. You know

More information

Energy is the ability to do work. Q: What is energy? Work is done when a force causes an object to move. Q: What is work? Q: Potential Energy

Energy is the ability to do work. Q: What is energy? Work is done when a force causes an object to move. Q: What is work? Q: Potential Energy Q: What is energy? Energy is the ability to do work. Q: What is work? Work is done when a force causes an object to move. Q: Potential Energy The energy of an object due to its position, shape, or condition

More information

Chapter 1 Heating Processes

Chapter 1 Heating Processes Chapter 1 Heating Processes Section 1.1 Heat and temperature Worked example: Try yourself 1.1.1 CALCULATING THE CHANGE IN INTERNAL ENERGY A student places a heating element and a paddle wheel apparatus

More information

There are four phases of matter: Phases of Matter

There are four phases of matter: Phases of Matter HEAT SCIENCE There are four phases of matter: Phases of Matter There are four phases of matter: Phases of Matter Animation States of Matter Solids Solids: Are rigid, crystalline Hold their shape Have little

More information

heat By cillian bryan and scott doyle

heat By cillian bryan and scott doyle heat By cillian bryan and scott doyle What is heat Heat energy is the result of the movement of tiny particles called atoms molecules or ions in solids, liquids and gases. Heat energy can be transferred

More information

Light is an important form of energy for all of us

Light is an important form of energy for all of us What is Light? Light is an important form of energy for all of us it allows us to see plants rely on light for photosynthesis many chemical reactions produce light life on Earth would not exist without

More information

Name Class Date. What are three kinds of energy transfer? What are conductors and insulators? What makes something a good conductor of heat?

Name Class Date. What are three kinds of energy transfer? What are conductors and insulators? What makes something a good conductor of heat? CHAPTER 14 SECTION Heat and Temperature 2 Energy Transfer KEY IDEAS As you read this section, keep these questions in mind: What are three kinds of energy transfer? What are conductors and insulators?

More information

2. Discrete means unique, that other states don t overlap it. 3. Electrons in the outer electron shells have greater potential energy.

2. Discrete means unique, that other states don t overlap it. 3. Electrons in the outer electron shells have greater potential energy. 30 Light Emission Answers and Solutions for Chapter 30 Reading Check Questions 1. At these high frequencies, ultraviolet light is emitted. 2. Discrete means unique, that other states don t overlap it.

More information

* Defining Temperature * Temperature is proportional to the kinetic energy of atoms and molecules. * Temperature * Internal energy

* Defining Temperature * Temperature is proportional to the kinetic energy of atoms and molecules. * Temperature * Internal energy * Defining Temperature * We associate temperature with how hot or cold an object feels. * Our sense of touch serves as a qualitative indicator of temperature. * Energy must be either added or removed from

More information

Temperature. Temperature Scales. Temperature (cont d) CHAPTER 14 Heat and Temperature

Temperature. Temperature Scales. Temperature (cont d) CHAPTER 14 Heat and Temperature Temperature CHAPTER 14 Heat and Temperature The temperature of a substance is proportional to the average kinetic energy of the substance s particles. As the average kinetic energy of the particles in

More information

Physics 111. Lecture 36 (Walker: ) Heat Capacity & Specific Heat Heat Transfer. May 1, Quiz (Chaps. 14 & 16) on Wed.

Physics 111. Lecture 36 (Walker: ) Heat Capacity & Specific Heat Heat Transfer. May 1, Quiz (Chaps. 14 & 16) on Wed. Physics 111 Lecture 36 (Walker: 16.4-6) Heat Capacity & Specific Heat Heat Transfer May 1, 2009 Quiz (Chaps. 14 & 16) on Wed. May 6 Lecture 36 1/26 Heat Capacity (C) The heat capacity C of an object is

More information

Physics Mechanics

Physics Mechanics 1 Physics 170 - Mechanics Lecture 35 Heat 2 Definition and Units of Heat Heat is a form of energy, and therefore is measured in joules. There are other units of heat, the most common one is the kilocalorie:

More information

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE- ANSWER KEY Name HR Date

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE- ANSWER KEY Name HR Date 1. How are different types of radiation arranged along the electromagnetic spectrum? A. By how fast they travel incorrect answer B. By their sources incorrect answer C. By the amount of energy they carry

More information

CPO Science Foundations of Physics. Unit 8, Chapter 26

CPO Science Foundations of Physics. Unit 8, Chapter 26 CPO Science Foundations of Physics Unit 8, Chapter 26 Unit 8: Matter and Energy Chapter 26 Heat Transfer 26.1 Heat Conduction 26.2 Convection 26.3 Radiation Chapter 26 Objectives 1. Explain the relationship

More information

Conducting Energy and Heat. Energy Likes to Move. Radiating Energy

Conducting Energy and Heat. Energy Likes to Move. Radiating Energy Energy Likes to Move If there is a temperature difference in a system, heat will naturally move from high to low temperatures. The place you find the higher temperature is the heat source. The area where

More information

Chapter 2: The global ledger of radiation and heat

Chapter 2: The global ledger of radiation and heat Chapter 2: The global ledger of radiation and heat PROPERTIES OF RADIATION Everything radiates at all wavelengths! This includes the Sun, Earth, a candy bar, even us Fortunately, most objects don t radiate

More information

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE Name HR Date

Planetary Science: Investigations 9-10 I-Check Quiz STUDY GUIDE Name HR Date 1. How are different types of radiation arranged along the electromagnetic spectrum? A. By how fast they travel incorrect answer B. By their sources incorrect answer C. By the amount of energy they carry

More information

Bernoulli s Principle. Application: Lift. Bernoulli s Principle. Main Points 3/13/15. Demo: Blowing on a sheet of paper

Bernoulli s Principle. Application: Lift. Bernoulli s Principle. Main Points 3/13/15. Demo: Blowing on a sheet of paper Bernoulli s Principle Demo: Blowing on a sheet of paper Where the speed of a fluid increases, internal pressure in the fluid decreases. Due to continuous flow of a fluid: what goes in must come out! Fluid

More information

HEATING THE ATMOSPHERE

HEATING THE ATMOSPHERE HEATING THE ATMOSPHERE Earth and Sun 99.9% of Earth s heat comes from Sun But

More information

Topic 2: Heat Affects Matter in Different Ways

Topic 2: Heat Affects Matter in Different Ways Topic 2: Heat Affects Matter in Different Ways 1 2.1 States of Matter and the Particle Model of Matter A. States of 1. Matter is made up of tiny particles and exist in 3 states:, and. 2. Matter can change

More information

Heat can be transferred by. and by radiation Conduction

Heat can be transferred by. and by radiation Conduction Heat can be transferred by conduction, by convection, and by radiation. The spontaneous transfer of heat is always from warmer objects to cooler objects. If several objects near one another have different

More information

Chapter 11 FUNDAMENTALS OF THERMAL RADIATION

Chapter 11 FUNDAMENTALS OF THERMAL RADIATION Chapter Chapter Fundamentals of Thermal Radiation FUNDAMENTALS OF THERMAL RADIATION Electromagnetic and Thermal Radiation -C Electromagnetic waves are caused by accelerated charges or changing electric

More information

Earth s Atmosphere. Energy Transfer in the Atmosphere. 3. All the energy from the Sun reaches Earth s surface.

Earth s Atmosphere. Energy Transfer in the Atmosphere. 3. All the energy from the Sun reaches Earth s surface. CHAPTER 11 LESSON 2 Earth s Atmosphere Energy Transfer in the Atmosphere Key Concepts How does energy transfer from the Sun to Earth and to the atmosphere? How are air circulation patterns within the atmosphere

More information

All matter is made of moving particles

All matter is made of moving particles All matter is made of moving particles I. Kinetic Theory of matter all particles in matter are constantly in motion a. Kinetic Energy is motion energy b. Therefore all particles in solids, liquids and

More information

LECTURE NOTES. Heat Transfer. III B. Tech II Semester (JNTUA-R15) CHADALAWADA RAMANAMMA ENGINEERING COLLEGE (AUTONOMOUS)

LECTURE NOTES. Heat Transfer. III B. Tech II Semester (JNTUA-R15) CHADALAWADA RAMANAMMA ENGINEERING COLLEGE (AUTONOMOUS) LECTURE NOTES on Heat Transfer III B. Tech II Semester (JNTUA-R15) Mr. K.SURESH, Assistant Professor CHADALAWADA RAMANAMMA ENGINEERING COLLEGE (AUTONOMOUS) Chadalawada Nagar, Renigunta Road, Tirupati 517

More information

Chapter 11. Energy in Thermal Processes

Chapter 11. Energy in Thermal Processes Chapter 11 Energy in Thermal Processes Energy Transfer When two objects of different temperatures are placed in thermal contact, the temperature of the warmer decreases and the temperature of the cooler

More information

Chapter 2. Heating Earth's Surface & Atmosphere

Chapter 2. Heating Earth's Surface & Atmosphere Chapter 2 Heating Earth's Surface & Atmosphere Topics Earth-Sun Relationships Energy, Heat and Temperature Mechanisms of Heat Transfer What happens to Incoming Solar Radiation? Radiation Emitted by the

More information

Conduction, Convection, & Radiation

Conduction, Convection, & Radiation Conduction, Convection, & Radiation Vanderbilt Student Volunteers for Science 2018-2019 VINSE/VSVS Rural I. Introduction- What is temperature? What is heat? Ask: what is temperature? scientific measure

More information

Physical Science Chapter 5 Cont3. Temperature & Heat

Physical Science Chapter 5 Cont3. Temperature & Heat Physical Science Chapter 5 Cont3 Temperature & Heat What are we going to study? Heat Transfer Phases of Matter The Kinetic Theory of Gases Thermodynamics Specific Heat (Capacity) Specific Heat Latent Heat

More information

Exercises Temperature (pages ) 1. Define temperature. 2. Explain how a common liquid thermometer works.

Exercises Temperature (pages ) 1. Define temperature. 2. Explain how a common liquid thermometer works. Chapter 21 Temperature, Heat, and Expansion Exercises 21.1 Temperature (pages 407 408) 1. Define temperature. 2. Explain how a common liquid thermometer works. Match each number with the corresponding

More information

Energy and Insolation Review 2

Energy and Insolation Review 2 Energy and Insolation Review 2 The diagram below shows a container of water that is being heated. 1. The movement of water shown by the arrows is most likely caused by (1) density differences (2) insolation

More information

Physics 231. Topic 13: Heat. Alex Brown Dec 1, MSU Physics 231 Fall

Physics 231. Topic 13: Heat. Alex Brown Dec 1, MSU Physics 231 Fall Physics 231 Topic 13: Heat Alex Brown Dec 1, 2015 MSU Physics 231 Fall 2015 1 8 th 10 pm correction for 3 rd exam 9 th 10 pm attitude survey (1% for participation) 10 th 10 pm concept test timed (50 min))

More information

11/18/2010. Only part of the spectrum we can see. A rainbow of colors, each corresponding to a different wavelength.

11/18/2010. Only part of the spectrum we can see. A rainbow of colors, each corresponding to a different wavelength. The sun is the source of energy to heat the Earth s surface. Solar energy makes it s way to Earth by an energy transfer mechanism called radiation. Energy transferred this way travels outwards in all directions

More information

Chapter 11. Energy in Thermal Processes

Chapter 11. Energy in Thermal Processes Chapter 11 Energy in Thermal Processes Vocabulary, 3 Kinds of Energy Internal Energy U = Energy of microscopic motion and intermolucular forces Work W = -F x = -P V is work done by compression (next chapter)

More information

What Is Air Temperature?

What Is Air Temperature? 2.2 Read What Is Air Temperature? In Learning Set 1, you used a thermometer to measure air temperature. But what exactly was the thermometer measuring? What is different about cold air and warm air that

More information

Lecture # 04 January 27, 2010, Wednesday Energy & Radiation

Lecture # 04 January 27, 2010, Wednesday Energy & Radiation Lecture # 04 January 27, 2010, Wednesday Energy & Radiation Kinds of energy Energy transfer mechanisms Radiation: electromagnetic spectrum, properties & principles Solar constant Atmospheric influence

More information

In class quiz - nature of light. Moonbow with Sailboats (Matt BenDaniel)

In class quiz - nature of light. Moonbow with Sailboats (Matt BenDaniel) In class quiz - nature of light Moonbow with Sailboats (Matt BenDaniel) Nature of light - review Light travels at very high but finite speed. Light is electromagnetic wave characterized by wavelength (or

More information

GARP 0102 Earth Radiation Balance (Part 1)

GARP 0102 Earth Radiation Balance (Part 1) Class 8: Earth s Radiation Balance I (Chapter 4) 1. Earth s Radiation Balance: Sun, Atmosphere, and Earth s Surface as a System 2. Electromagnetic Radiation: Shortwave vs. longwave radiation (Page 69-71)

More information

Ready for some more SCIENCE Homer?

Ready for some more SCIENCE Homer? Ready for some more SCIENCE Homer? Alright brain, you don t like me and I don t like you; but let s get through this and I can get back to killing you with beer! Homer gives his brain a pep talk Disclaimer:

More information

Broughton High School. Thermal Energy. Physical Science Workbook Chapter 6 Thermal Energy 2016 Mr. Davis

Broughton High School. Thermal Energy. Physical Science Workbook Chapter 6 Thermal Energy 2016 Mr. Davis 1 Thermal Energy Vocabulary for Chapter 6 Thermal Energy Broughton High School Physical Science Vocabulary No.# Term Page # Definition 2 1. Degrees 2. Higher Specific Heat 3. Heat of Vaporization 4. Radiation

More information

!U = Q " P!V. Q = mc!t. Vocabulary, 3 Kinds of Energy. Chapter 11. Energy in Thermal Processes. Example Temperature and Specific Heat

!U = Q  P!V. Q = mc!t. Vocabulary, 3 Kinds of Energy. Chapter 11. Energy in Thermal Processes. Example Temperature and Specific Heat Vocabulary, 3 Kinds of Energy Chapter 11 Energy in Thermal Processes Internal Energy U = Energy of microscopic motion and intermolucular forces Work W = -F!x = -P!V is work done by compression (next chapter)

More information

KS3 Science. Heat and Energy

KS3 Science. Heat and Energy KS3 Science Heat and Energy Heat and Energy Key Words Write a definition for each of the key words listed below Key words States of matter Melt Freeze Evaporate Condense Heat Conduction Convention Radiation

More information

Black Body Radiation and Planck's Quantum Hypothesis

Black Body Radiation and Planck's Quantum Hypothesis Section 3: Black Body Radiation and Planck's Quantum Hypothesis Definitions Opaque materials: materials in which no light is allowed to pass through; all light is either absorbed or reflected. Radiation:

More information

Lecture5PracticeQuiz.txt

Lecture5PracticeQuiz.txt TAKEN FROM HORIZONS 7TH EDITION CHAPTER 6 TUTORIAL QUIZ 1. The difference between radiation and sound is that a. radiation exhibits the Doppler effect, whereas sound does not. b. radiation travels much

More information

General Physics (PHY 2130)

General Physics (PHY 2130) General Physics (PHY 2130) Lecture 34 Heat Heat transfer Conduction Convection Radiation http://www.physics.wayne.edu/~apetrov/phy2130/ Lightning Review Last lecture: 1. Thermal physics Heat. Specific

More information

Name... Class... Date...

Name... Class... Date... Radiation and temperature Specification reference: P6.3 Black body radiation (physics only) Aims This is an activity that has been designed to help you improve your literacy skills. In this activity you

More information

P5 Heat and Particles Revision Kinetic Model of Matter: States of matter

P5 Heat and Particles Revision Kinetic Model of Matter: States of matter P5 Heat and Particles Revision Kinetic Model of Matter: States of matter State Size Shape Solid occupies a fixed volume has a fixed shape Liquid occupies a fixed volume takes the shape of its container

More information

Key Concept Heat in Earth s atmosphere is transferred by radiation, conduction, and convection.

Key Concept Heat in Earth s atmosphere is transferred by radiation, conduction, and convection. Section 2 Atmospheric Heating Key Concept Heat in Earth s atmosphere is transferred by radiation, conduction, and convection. What You Will Learn Solar energy travels through space as radiation and passes

More information

We re about to play: PSUEDO-JEOPARDY!!!!! (Aka The Answer Is... ) It will refresh your memories about some of the key concepts we ve covered.

We re about to play: PSUEDO-JEOPARDY!!!!! (Aka The Answer Is... ) It will refresh your memories about some of the key concepts we ve covered. We re about to play: PSUEDO-JEOPARDY!!!!! (Aka The Answer Is... ) It will refresh your memories about some of the key concepts we ve covered. The STUDY GUIDE will take it from here... If you use it and

More information

Thermal Energy. Chapter 6 2 Transferring Thermal Energy

Thermal Energy. Chapter 6 2 Transferring Thermal Energy Thermal Energy Chapter 6 2 Transferring Thermal Energy Objectives Compare and contrast conduction, convection, and radiation. Compare and contrast conductors and insulators. CLE 3202.2.3 Examine the applications

More information

Grade 7 Revision sheet Key Answer. Kingdom of Bahrain Ministry of Education Ahlia School -ABCD

Grade 7 Revision sheet Key Answer. Kingdom of Bahrain Ministry of Education Ahlia School -ABCD Grade 7 Revision sheet Key Answer Question 1: Directions: On each line, write the term that correctly completes each sentence. A. The Parts of an Atom 1. atoms, 2. particles; Number 3. Nucleus a. Proton

More information

Heat & Temperature. Grade 7 Science - Unit 2 Pgs

Heat & Temperature. Grade 7 Science - Unit 2 Pgs Heat & Temperature Grade 7 Science - Unit 2 Pgs 104-225 Temperature P Temperature is the measure of how much heat is in a substance. P Temperature is measured in degrees Celcius ( C) P It is difficult

More information

Being a Chemist. Summary Sheets. Gleniffer High School

Being a Chemist. Summary Sheets. Gleniffer High School Being a Chemist Summary Sheets Gleniffer High School 0 State that the light year is a measure of astronomical distance State the speed at which light travels Give examples of the relative distance between

More information

Demonstrate understanding of aspects of heat

Demonstrate understanding of aspects of heat Demonstrate understanding of aspects of heat Heat Transfer Temperature - temperature is a measure of the average kinetic energy of the particles making up an object (measured in C or K) 0 K = -273 o C

More information

PHYSICS 289 Experiment 3 Fall Heat transfer and the Greenhouse Effect

PHYSICS 289 Experiment 3 Fall Heat transfer and the Greenhouse Effect PHYSICS 289 Experiment 3 Fall 2006 Heat transfer and the Greenhouse Effect Only a short report is required: worksheets, graphs and answers to the questions. Introduction In this experiment we study the

More information

10/31/2017. Calculating the temperature of earth (The greenhouse effect) IR radiation. The electromagnetic spectrum

10/31/2017. Calculating the temperature of earth (The greenhouse effect)   IR radiation. The electromagnetic spectrum Calculating the temperature of earth (The greenhouse effect) EM radiation so far Spectrum of EM radiation emitted by many objects may be approximated by the blackbody spectrum Blackbody spectrum (plot

More information

Section 1: The Science of Energy¹. What Is Energy? SECTION 1: Activities

Section 1: The Science of Energy¹. What Is Energy? SECTION 1: Activities SECTION1: THE SCIENCE OF ENERGY Section 1: The Science of Energy¹ What Is Energy? Energy is the ability to do work or the ability to make a change. Everything that happens in the world involves the exchange

More information

Lecture Outlines PowerPoint. Chapter 16 Earth Science 11e Tarbuck/Lutgens

Lecture Outlines PowerPoint. Chapter 16 Earth Science 11e Tarbuck/Lutgens Lecture Outlines PowerPoint Chapter 16 Earth Science 11e Tarbuck/Lutgens 2006 Pearson Prentice Hall This work is protected by United States copyright laws and is provided solely for the use of instructors

More information

Lecture 4: Heat, and Radiation

Lecture 4: Heat, and Radiation Lecture 4: Heat, and Radiation Heat Heat is a transfer of energy from one object to another. Heat makes things warmer. Heat is measured in units called calories. A calorie is the heat (energy) required

More information

Section 1: The Science of Energy¹

Section 1: The Science of Energy¹ SECTION1: THE SCIENCE OF ENERGY Section 1: The Science of Energy¹ What Is Energy? Energy is the ability to do work or the ability to make a change. Everything that happens in the world involves the exchange

More information

Heat and Temperature

Heat and Temperature Heat and Temperature Temperature What does temperature have to do with energy? What three temperature scales are commonly used? What makes things feel hot or cold? Intro: Discussion A person from Seattle

More information

Light. October 14, ) Exam Review 2) Introduction 3) Light Waves 4) Atoms 5) Light Sources

Light. October 14, ) Exam Review 2) Introduction 3) Light Waves 4) Atoms 5) Light Sources Light October 14, 2002 1) Exam Review 2) Introduction 3) Light Waves 4) Atoms 5) Light Sources Waves You know of many types of waves water, sound, seismic, etc A wave is something oscillating back and

More information

1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly *b. inversely

1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly *b. inversely CHAPTER 3 SOLAR AND TERRESTRIAL RADIATION MULTIPLE CHOICE QUESTIONS 1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly *b. inversely 2. is the distance between successive

More information

1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly b. inversely

1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly b. inversely CHAPTER 3 SOLAR AND TERRESTRIAL RADIATION MULTIPLE CHOICE QUESTIONS 1. The frequency of an electromagnetic wave is proportional to its wavelength. a. directly b. inversely 2. is the distance between successive

More information

Light & Atoms. Electromagnetic [EM] Waves. Light and several other forms of radiation are called electromagnetic waves or electromagnetic radiation.

Light & Atoms. Electromagnetic [EM] Waves. Light and several other forms of radiation are called electromagnetic waves or electromagnetic radiation. Light & Atoms Electromagnetic [EM] Waves Light and several other forms of radiation are called electromagnetic waves or electromagnetic radiation. These have both and electric part and a magnetic part

More information

TOPIC # 6 The RADIATION LAWS

TOPIC # 6 The RADIATION LAWS TOPIC # 6 The RADIATION LAWS More KEYS to unlocking the topics of: The GREENHOUSE EFFECT, GLOBAL WARMING & OZONE DEPLETION! Topic #6 pp 33-38 OBJECTIVES FOR TODAY S CLASS: To understand the essentials

More information

ATM S 111: Global Warming Solar Radiation. Jennifer Fletcher Day 2: June

ATM S 111: Global Warming Solar Radiation. Jennifer Fletcher Day 2: June ATM S 111: Global Warming Solar Radiation Jennifer Fletcher Day 2: June 22 2010 Yesterday We Asked What factors influence climate at a given place? Sunshine (and latitude) Topography/mountains Proximity

More information

10/21/2015. Lightbulbs. Blackbody spectrum. Temperature and total emitted power (brightness) Blackbody spectrum and temperature

10/21/2015. Lightbulbs. Blackbody spectrum. Temperature and total emitted power (brightness) Blackbody spectrum and temperature Lightbulbs EM radiation so far EM radiation is a periodic modulation of the electric field: travels as a wave Wavelength (or frequency) determines: - type of EM radiation - if in visible range, wavelength

More information

Properties of Electromagnetic Radiation Chapter 5. What is light? What is a wave? Radiation carries information

Properties of Electromagnetic Radiation Chapter 5. What is light? What is a wave? Radiation carries information Concepts: Properties of Electromagnetic Radiation Chapter 5 Electromagnetic waves Types of spectra Temperature Blackbody radiation Dual nature of radiation Atomic structure Interaction of light and matter

More information

Lightbulbs. Lecture 18 : Blackbody spectrum Improving lightbulb efficiency

Lightbulbs. Lecture 18 : Blackbody spectrum Improving lightbulb efficiency Lightbulbs Lecture 18 : Blackbody spectrum Improving lightbulb efficiency Reminders: HW 7 due Monday at 10pm Simulations available in G116 Reading quiz on Tuesday, 10.1 EM radiation so far EM radiation

More information

Chapter 14 Heat. Lecture PowerPoints. Chapter 14 Physics: Principles with Applications, 7 th edition Giancoli

Chapter 14 Heat. Lecture PowerPoints. Chapter 14 Physics: Principles with Applications, 7 th edition Giancoli Lecture PowerPoints Chapter 14 Physics: Principles with Applications, 7 th edition Giancoli This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching

More information

Section 2: The Atmosphere

Section 2: The Atmosphere Section 2: The Atmosphere Preview Classroom Catalyst Objectives The Atmosphere Composition of the Atmosphere Air Pressure Layers of the Atmosphere The Troposphere Section 2: The Atmosphere Preview, continued

More information

Thermal Energy. Thermal Energy is the TRANSFER of kinetic energy between two objects that are at different temperatures.

Thermal Energy. Thermal Energy is the TRANSFER of kinetic energy between two objects that are at different temperatures. Thermal Energy Thermal Energy is the TRANSFER of kinetic energy between two objects that are at different temperatures. And remember: heat will always transfer from a warm object to a cold object. HEAT

More information

Directed Reading. Section: Solar Energy and the Atmosphere RADIATION. identical point on the next wave. waves

Directed Reading. Section: Solar Energy and the Atmosphere RADIATION. identical point on the next wave. waves Skills Worksheet Directed Reading Section: Solar Energy and the Atmosphere 1. How is Earth s atmosphere heated? 2. Name the two primary sources of heat in the atmosphere. RADIATION In the space provided,

More information

High temperature He is hot

High temperature He is hot Lecture 9 What is Temperature and Heat? High temperature He is hot Some important definitions * Two objects are in Thermal contact with each other if energy can be exchanged between them. Thermal equilibrium

More information

Lecture 5: Greenhouse Effect

Lecture 5: Greenhouse Effect /30/2018 Lecture 5: Greenhouse Effect Global Energy Balance S/ * (1-A) terrestrial radiation cooling Solar radiation warming T S Global Temperature atmosphere Wien s Law Shortwave and Longwave Radiation

More information

Chapter 16 Temperature and Heat

Chapter 16 Temperature and Heat Chapter 16 Temperature and Heat 16-1 Temperature and the Zeroth Law of Thermodynamics Definition of heat: Heat is the energy transferred between objects because of a temperature difference. Objects are

More information

THERMODYNAMICS METHODS OF HEAT TRANSFER RADIATION

THERMODYNAMICS METHODS OF HEAT TRANSFER RADIATION VISUAL PHYSICS ONLINE THERMODYNAMICS METHODS OF HEAT TRANSFER RADIATION Radiation is the energy transferred by electromagnetic waves mainly infrared (IR), visible and ultraviolet (UV). All materials radiate

More information

Energy Transfers. Heat Transfer. Internal Energy. Going With The Flow! 5/12/17. à Thermal Energy. Q = mcdt Q =DU. U = N(1/2mv 2 )

Energy Transfers. Heat Transfer. Internal Energy. Going With The Flow! 5/12/17. à Thermal Energy. Q = mcdt Q =DU. U = N(1/2mv 2 ) Energy Transfers What Type of Energy Can be transformed into Thermal Energy? Heat Transfer à Thermal Energy Internal Energy What happens to the energy when it absorbed by the object? U = N(1/2mv 2 ) Where:

More information

Name: Grade 6 Date: REVISION BOOKLET

Name: Grade 6 Date: REVISION BOOKLET REVISION BOOKLET science 1 Chapter # 16 MACHINES QA: Read each question and choose the best answer. Then fill in the circle next to the correct answer. 1. Dan and Paul push a box 4 meters with a force

More information

Lecture 5: Greenhouse Effect

Lecture 5: Greenhouse Effect Lecture 5: Greenhouse Effect S/4 * (1-A) T A 4 T S 4 T A 4 Wien s Law Shortwave and Longwave Radiation Selected Absorption Greenhouse Effect Global Energy Balance terrestrial radiation cooling Solar radiation

More information

Energy - Heat, Light, and Sound

Energy - Heat, Light, and Sound Energy - Heat, Light, and Sound Source: Utah State Office of Education A two-year-old has plenty of it, and the sun has a bunch of it. Do you know what it is? If not, let me give you a definition: A source

More information

What does temperature have to do with energy? What three temperature scales are commonly used? What makes things feel hot or cold?

What does temperature have to do with energy? What three temperature scales are commonly used? What makes things feel hot or cold? Heat and Temperature Section 1: Temperature What does temperature have to do with energy? What three temperature scales are commonly used? What makes things feel hot or cold? 1 Intro: Discussion A person

More information

TEMPERATURE. 8. Temperature and Heat 1

TEMPERATURE. 8. Temperature and Heat 1 TEMPERATURE Heat is the energy that is transferred between objects because of a temperature difference Terms such as transfer of heat or heat flow from object A to object B simply means that the total

More information

Thermal energy. Thermal energy is the internal energy of a substance. I.e. Thermal energy is the kinetic energy of atoms and molecules.

Thermal energy. Thermal energy is the internal energy of a substance. I.e. Thermal energy is the kinetic energy of atoms and molecules. Thermal energy Thermal energy is the internal energy of a substance. I.e. Thermal energy is the kinetic energy of atoms and molecules. Heat is the transfer of thermal energy between substances. Until the

More information

Frequency: the number of complete waves that pass a point in a given time. It has the symbol f. 1) SI Units: Hertz (Hz) Wavelength: The length from

Frequency: the number of complete waves that pass a point in a given time. It has the symbol f. 1) SI Units: Hertz (Hz) Wavelength: The length from Frequency: the number of complete waves that pass a point in a given time. It has the symbol f. 1) SI Units: Hertz (Hz) Wavelength: The length from the one crest of a wave to the next. I. Electromagnetic

More information

The Atmosphere and Atmospheric Energy Chapter 3 and 4

The Atmosphere and Atmospheric Energy Chapter 3 and 4 The Atmosphere and Atmospheric Energy Chapter 3 and 4 Size of the Earth s Atmosphere Atmosphere produced over 4.6 billion years of development Protects us from radiation Completely surrounds the earth

More information