Energy: Forms and Changes
|
|
|
- Muriel Hart
- 6 years ago
- Views:
Transcription
1 Energy: Forms and Changes
2 Nature of Energy Energy is all around you! You can hear energy as sound. You can see energy as light. And you can feel it as wind.
3 Nature of Energy You use energy when you: hit a softball. lift your book bag. compress a spring.
4 Nature of Energy What is energy that it can be involved in so many different activities? Energy is defined as the ability to do work. If an object or organism does work (exerts a force over a distance to move something) the object or organism uses energy. Work = Force x distance
5 Nature of Energy Because of the direct connection between energy and work, energy is measured in the same unit as work: joules (J). 1 Joule = kilogram *meters 2 /second 2 In addition to using energy to do work, objects gain energy because work is being done on them.
6 Forms of Energy Five common forms of energy are: Heat Chemical Electromagnetic Nuclear Mechanical
7 Heat (Thermal) Energy The internal motion of the atoms is called heat energy, because moving particles produce heat. Heat energy can be produced by friction. Heat energy causes changes in temperature and phase of any form of matter.
8 Chemical Energy Chemical Energy is required to bond atoms together. And when bonds are broken, energy is released.
9 Chemical Energy Fuel and food are forms of stored chemical energy Hydrocarbons, fats, starches, carbohydrates
10 Electromagnetic/Electrical Energy Power lines carry electromagnetic energy into your home in the form of electricity.
11 Electromagnetic Energy Light is a form of electromagnetic energy. Each color of light (Roy G Bv) represents a different amount of electromagnetic energy. Electromagnetic Energy is also carried by X-rays, radio waves, and laser light.
12 Nuclear Energy The nucleus of an atom is the source of nuclear energy.
13 Nuclear Energy When the nucleus splits (fission), nuclear energy is released in the form of heat energy and light energy. Nuclear energy is also released when nuclei collide at high speeds and join (fusion).
14 Nuclear Energy The sun s energy is produced from a nuclear fusion reaction in which hydrogen nuclei fuse to form helium nuclei.
15 Mechanical Energy When work is done to an object, it acquires energy. The energy it acquires is known as mechanical energy.
16 Mechanical Energy When you kick a football, you give mechanical energy to the football to make it move.
17 Mechanical Energy When you throw a bowling ball, you give it energy. When that bowling ball hits the pins, some of the energy is transferred to the pins.
18 Energy Conversion Energy can be changed from one form to another. Changes in the form of energy are called energy conversions.
19 Energy conversions All forms of energy can be converted into other forms. The sun s energy through solar cells can be converted directly into electricity. (solar to electrical) Green plants convert the sun s energy (electromagnetic) into starches and sugars (chemical energy).
20 Other energy conversions In an electric motor, electrical energy is converted to mechanical energy. In a battery, chemical energy is converted into electrical energy. The mechanical energy of a waterfall is converted to electrical energy in a generator.
21 Energy Conversions In an automobile engine, fuel is burned to convert chemical energy into heat energy. The heat energy is then changed into mechanical energy.
22 Chemical Heat Mechanical
23 States of Energy The most common energy conversion is the conversion between potential and kinetic energy. All forms of energy can be in either of two states: Potential Kinetic
24 States of Energy: Kinetic and Potential Energy Kinetic Energy is the energy of motion. Potential Energy is stored energy.
25 Kinetic Energy The energy of motion is called kinetic energy. The faster an object moves, the more kinetic energy it has. The greater the mass of a moving object, the more kinetic energy it has. Kinetic energy depends on both mass and velocity.
26 Kinetic Energy K.E. = ½ (mass x velocity 2 ) KE = ½ mv 2 EXAMPLE!!!!!!!! What has a greater affect of kinetic energy, mass or velocity? Why?
27 Potential Energy Potential Energy is stored energy. Stored chemically in fuel, the nucleus of atom, and in foods. Or stored because of the work done on it: Stretching a rubber band. Winding a watch. Pulling back on a bow s arrow. Lifting a brick high in the air.
28 Gravitational Potential Energy Potential energy that is dependent on height is called gravitational potential energy.
29 Gravitational Potential Energy A waterfall, an elevator, and a falling snowflake all have gravitational potential energy.
30 Gravitational Potential Energy If you stand on a 3-meter diving board, you have 3 times the G.P.E, than you had on a 1-meter diving board.
31 Gravitational Potential Energy The bigger they are the harder they fall is not just a saying. It s true. Objects with more mass have greater G.P.E. The formula to find G.P.E. is G.P.E. = mgh or Weight (kilogram * meters/s 2 ) X Height (meters).
32 Weight = Mass (kilograms) x acceleration due to gravity (9.8 m/s 2 ) so GPE = mgh EXAMPLE!!!!!!!!!
33 Kinetic-Potential Energy Conversion Roller coasters work because of the energy that is built into the system. Initially, the cars are pulled mechanically up the tallest hill, giving them a great deal of potential energy. From that point, the conversion between potential and kinetic energy powers the cars throughout the entire ride.
34 Kinetic vs. Potential Energy At the point of maximum potential energy, the car has minimum kinetic energy.
35 Kinetic-Potential Energy Conversions As a basketball player throws the ball into the air, various energy conversions take place. The total mechanical energy of the ball in the air is equal to the kinetic + the potential energy
36 Ball slows down Ball speeds up
37 The Law of Conservation of Energy Energy can be neither created nor destroyed by ordinary means. It can only be converted from one form to another. So we often use KE + GPE =total energy ignoring friction.
Energy: Forms and Changes
Energy: Forms and Changes Nature of Energy Energy is all around you! You can hear energy as sound. You can see energy as light. And you can feel it as wind. Nature of Energy You use energy when you: hit
Energy: Forms and Changes
Energy: Forms and Changes The Energy Story Nature of Energy Energy is all around you! l You can hear energy as sound. l You can see energy as light. l And you can feel it as wind. Nature of Energy You
TYPES OF ENERGY and Energy
TYPES OF ENERGY and Energy Conversions Mechanical, Electromagnetic, Electrical, Chemical, Nuclear, and Thermal What is Mechanical Energy? o Energy due to an object s motion (kinetic) or position (potential).
15.1 Energy and Its Forms. Energy and Work. How are energy and work related? Energy is the ability to do work. Work is a transfer of energy.
Energy and Work How are energy and work related? Energy is the ability to do work. Work is a transfer of energy. Energy and Work Energy has different forms. A. The sun gives off energy in the form of heat
Energy and Mechanical Energy
Energy and Mechanical Energy Energy Review Remember: Energy is the ability to do work or effect change. Usually measured in joules (J) One joule represents the energy needed to move an object 1 m of distance
The Story of Energy. Forms and Functions
The Story of Energy Forms and Functions What are 5 things E helps us do? Batteries store energy! This car uses a lot of energy Even this sleeping puppy is using stored energy. We get our energy from FOOD!
Forms of Energy. What is energy? Energy is the amount of work that can be done by a force. What is a measure of energy? Joule.
Forms of Energy What is energy? Energy is the amount of work that can be done by a force. What is a measure of energy? Joule. Major Classes of Energy 1. Kinetic energy (E k ) is the work needed to accelerate
Introduction to Energy Study Guide (also use your notes!!!!)
Introduction to Energy Study Guide (also use your notes!!!!) 1. What is energy? The ability to do work 2. What is kinetic energy? The energy of motion (movement) 3. Can objects with kinetic energy do work?
Ch 11 ENERGY and its CONSERVATION. work causes a change in the energy of a system KE (an increase or decrease in KE) ket.
Ch 11 ENERGY and its CONSERVATION 11.1 The Many Forms of Energy work causes a change in the energy of a system W = KE (an increase or decrease in KE) work energy theorem object + work object work increase
What is Energy? In science, energy is the ability to do work. Work is done when a force causes an object to move in the direction of the force.
What is Energy? In science, energy is the ability to do work. Work is done when a force causes an object to move in the direction of the force. Energy Energy is the ability to do work. (reminder=what is
Clicker Question: Momentum. If the earth collided with a meteor that slowed it down in its orbit, what would happen: continued from last time
Momentum continued from last time If the earth collided with a meteor that slowed it down in its orbit, what would happen: A: It would maintain the same distance from the sun. B: It would fall closer in
law of conservation of energy energy
What happens when? 6.8A compare and contrast potential and kinetic energy 6.9 Law of Conservation of energy states that energy can neither be created nor destroyed. How does it work? Explanation If you
Law of of Energy. Energy is NEVER created or destroyed! Energy can only be STORED or TRANFERRED.
Energy! What is ENERGY? Energy is the ability to do work. Everything that happens in the world uses energy! Most of the @me we can t see energy, but it is everywhere around us! Law of Conserva@on of Energy
7.6(B) distinguish between physical and chemical changes in matter in the digestive system; and
7.6(B) distinguish between physical and chemical changes in matter in the digestive system; and 7.7(B) illustrate the transformation of energy within an organism such as the transfer from chemical energy
Energy - the ability to do work or cause change. 1 point
Energy and Waves Energy - the ability to do work or cause change Work - the transfer of energy Work = Force X Distance Power - the rate at which work is done Power = Work Time Kinetic Energy - the energy
WORK is. a FORCE is a push or a pull. when a FORCE moves an object. the ability to do WORK or cause change
ENERGY is the ability to do WORK or cause change Name 2 things that ARE energy or that HAVE energy WORK is when a FORCE moves an object a FORCE is a push or a pull There are two main kinds of energy POTENTIAL
CHAPTER 13.3 AND 13.4 ENERGY
CHAPTER 13.3 AND 13.4 ENERGY Section 13.3 Energy Objective 1: What is the relationship between energy and work? Objective 2: Identify the energy of position. Objective 3: The factors that kinetic energy
In an avalanche, a mass of loose snow, soil, or rock suddenly gives way and slides down the side of a mountain.
ENERGY Energy Objective 1: What is the relationship between energy and work? Objective 2: Identify the energy of position. Objective 3: The factors that kinetic energy depends on Objective 4: What is non-mechanical
Work, Power and Energy Worksheet
Work, Power and Energy Worksheet Name: 1. Which of the following statements are true about work? Include all that apply. a. Work is the transfer of energy into or out of a system by means of an external
Energy. Potential Kinetic
Energy the ability to do work or cause change typically expressed in units of joules (J) can be transferred from one object to another two general types: Potential Kinetic Potential Energy (PE) stored
Mechanical Energy Thermal Energy Chemical Energy Electrical Energy Electromagnetic Energy
Physical Science PHYSICS UNIT 4 Study Guide. Chapter 15 - Energy Key Terms Energy Kinetic Energy Potential Gravitational Potential Elastic Potential Mechanical Energy Thermal Energy Chemical Energy Electrical
Unit 1: Energy and Motion
4 4 Table of Contents Unit 1: Energy and Motion Chapter 4: Energy 4.1: The Nature of Energy 4.2: Conservation of Energy 4.1 The Nature of Energy Change Requires Energy Energy: ability to cause change.
Introduction to Energy! 6 th Grade Module H: Matter and Energy Unit 2: Energy Lesson 1
Introduction to Energy! 6 th Grade Module H: Matter and Energy Unit 2: Energy Lesson 1 Energy is There are two main types of energy Kinetic energy - energy of an object that is due to motion. All moving
Energy: The ability to do work and the ability to cause change
Notes: Energy Energy: The ability to do work and the ability to cause change Work: occurs when a force causes an object to move in the direction of the force -Work and Energy are expressed in joules (J)
Kinetic and Potential Energy. Supplemental Text Material Pages
Kinetic and Potential Energy Supplemental Text Material Pages 326-333 Work Transference of Energy Work = Force x distance W=Fd Work Lifting load against the force of the weight of the object Twice the
Energy and Energy Transformations
CHAPTER 2 Energy and Energy Transformations Forms of Energy What do you think? Read the three statements below and decide whether you agree or disagree with them. Place an A in the Before column if you
Today. Finish Ch. 6 on Momentum Start Ch. 7 on Energy
Today Finish Ch. 6 on Momentum Start Ch. 7 on Energy Next three lectures (Sep 16, 20, 23) : Energy (Ch7) and Rotation (Ch.8) will be taught by Dr. Yonatan Abranyos, as I will be away at a research conference
Name Class Date. Energy Energy
CHAPTER 13 3 What Is Energy? SECTION Work and Energy KEY IDEAS As you read this section, keep these questions in mind: How are energy and work related? Why is potential energy called energy of position?
Mechanical Energy the energy associated with position and motion of an object
Unit 3.3 Mechanical Energy the energy associated with position and motion of an object Mechanical Energy is composed of both kinetic and potential energy. Mechanical Energy = Potential Energy + Kinetic
IGCSE Double Award Extended Coordinated Science
IGCSE Double Award Extended Coordinated Science Physics 3.1 & 3.3 & 3.4 - Energy, Work, and Power Energy, Work, and Power You need to know what energy, work, and power is, and the units for energy and
Alief ISD Middle School Science STAAR Review Reporting Category 2: Force, Motion, & Energy
8.6.A demonstrate and calculate how unbalanced forces change the speed or direction of an object s motion Alief ISD Middle School Science STAAR Review Reporting Category 2: Force, Motion, & Energy Force
Energy and Energy Transfer. Warm Up. Physics Unit: ENERGY. October 31, Major Types of Energy
Energy and Energy Transfer Create a New Unit: In your Notebook, use 1 whole page and write: Physics Unit: ENERGY Draw pictures of anything you can think of related to "Energy". Energy > The ability to
KINETIC AND POTENTIAL ENERGY. Chapter 6 (cont.)
KINETIC AND POTENTIAL ENERGY Chapter 6 (cont.) The Two Types of Mechanical Energy Energy- the ability to do work- measured in joules Potential Energy- energy that arises because of an object s position
Lecture Outline. Chapter 7: Energy Pearson Education, Inc.
Lecture Outline Chapter 7: Energy This lecture will help you understand: Energy Work Power Mechanical Energy: Potential and Kinetic Work-Energy Theorem Conservation of Energy Machines Efficiency Recycled
WHAT IS ENERGY???? Energy can have many different meanings and. The ability of an object to do work. Measured in joules (J)
WHAT IS ENERGY???? Energy can have many different meanings and forms The ability of an object to do work Measured in joules (J) N m = J Work in Progress So what is are the different types of energy? DIFFERENT
Section 1: Work, Power, and Machines. Preview Key Ideas Bellringer What Is Work? Math Skills Power Machines and Mechanical Advantage
Section 1 Section 1: Work, Power, and Machines Preview Key Ideas Bellringer What Is Work? Math Skills Power Machines and Mechanical Advantage Section 1 Key Ideas How is work calculated? What is the relationship
Table of Contents. Chapter: Energy. Section 1: The Nature of Energy. Section 2: Conservation of Energy
Table of Contents Chapter: Energy Section 1: The Nature of Energy Section 2: 1 The Nature of Energy What is energy? Wherever you are sitting as you read this, changes are taking place lightbulbs are heating
8th Grade. Energy of Objects in Motion. Energy and its Forms. Slide 1 / 122 Slide 2 / 122. Slide 3 / 122. Slide 4 / 122.
Slide / 22 Slide 2 / 22 8th Grade Energy of Objects of Motion 205-0-28 www.njctl.org Slide 3 / 22 Energy of Objects in Motion Slide 4 / 22 Review from Last Unit Energy and its Forms Mechanical Energy Energy
Potential and Kinetic Energy
Potential and Kinetic Energy 1 of 31 Boardworks Ltd 2016 Potential and Kinetic Energy 2 of 31 Boardworks Ltd 2016 What is a system? 3 of 31 Boardworks Ltd 2016 A system is an object or a group of objects.
Energy, Work, and Power
Matthew W. Milligan, Work, and Power Conservation Laws an Alternative to Newton s Laws Matthew W. Milligan, Work, and Power I. - kinetic and potential - conservation II. Work - dot product - work-energy
Energy Notes. Name: Hr:
Energy Notes Name: Hr: Guided Outline 5-1 Nature of Energy Directions: As you read through Chapter 5 in your textbook, fill in the missing information. I. Section 1: Nature of Energy A. What is Energy?
Work and Energy. Work
Work and Energy Objectives: Students will define work. Students will define and give examples of different forms of energy. Students will describe and give examples of kinetic energy and potential energy.
Lecture Outline. Chapter 7: Energy Pearson Education, Inc.
Lecture Outline Chapter 7: Energy This lecture will help you understand: Energy Work Power Mechanical Energy: Potential and Kinetic Work-Energy Theorem Conservation of Energy Machines Efficiency Recycled
Do Now: What does it mean when you say That person has a lot of energy?
Do Now: What does it mean when you say That person has a lot of energy? ENERGY What have we learned so far? 1. Work is done on an object when a force acts in the direction the object is moving. 2. When
Energy "is an abstract concept invented by scientists in the nineteenth century to describe quantitatively a wide variety of natural phenomena.
Energy Energy "is an abstract concept invented by scientists in the nineteenth century to describe quantitatively a wide variety of natural phenomena." David Rose What is energy? Energy makes changes;
Chapter 2 Physics in Action Sample Problem 1 A weightlifter uses a force of 325 N to lift a set of weights 2.00 m off the ground. How much work did th
Chapter Physics in Action Sample Problem 1 A weightlifter uses a force of 35 N to lift a set of weights.00 m off the ground. How much work did the weightlifter do? Strategy: You can use the following equation
Momentum. Impulse = F t. Impulse Changes Momentum
Momentum and Energy Chapter 3 Momentum Momentum is inertia in motion Mass x velocity Has both magnitude and direction Large mass or high speed can give object great amount of momentum Momentum = m v Change
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
Energy & Life PRE READING TASK. State the different types of Energy you know WHICH YOU SEE AROUND YOU, give some EXAMPLES.
Name: Class: Date: Energy & Life Grade 11A Science Related Reading/Physics Physics Gr11A PRE READING TASK TYPES OF ENERGY State the different types of Energy you know WHICH YOU SEE AROUND YOU, give some
Elastic Potential Energy
Elastic Potential Energy If you pull on a spring and stretch it, then you do work. That is because you are applying a force over a displacement. Your pull is the force and the amount that you stretch the
Energy Basics First Law of Thermodynamics and Energy Transformations Integrated Science 4 Honors Name: Per:
Energy Basics First Law of Thermodynamics and Energy Transformations Integrated Science 4 Honors Name: Per: To understand how natural and human-built systems work, we must clearly define what matter and
Energy transformations Sources and Effects and transmission of Energy
Winnetonka 9 th Grade Physics: Unit 9 test Energy transformations Sources and Effects and transmission of Energy Kinetic Energy: E! =!! m v! Gravitational Potential Energy: E! = m g h Elastic Potential
Momentum and Energy. Chapter 3
Momentum and Energy Chapter 3 Momentum Momentum is inertia in motion Mass x velocity Has both magnitude and direction Large mass or high speed can give object great amount of momentum Momentum = m v Change
Work and Energy Chapter 4 and 5
Section 1 Work and Energy Chapter 4 and 5 Motion Read Chapter 4 pages 100 121 and Chapter 5 pages: 126-153 Objectives: - Distinguish between kinetic and potential energy; calculate kinetic energy, describe
Foundations of Physical Science. Unit 2: Work and Energy
Foundations of Physical Science Unit 2: Work and Energy Chapter 5: Work, Energy, and Power 5.1 Work 5.2 Energy Conservation 5.3 Energy Transformations Learning Goals Calculate the amount of work done by
Exercises. 9.1 Work (pages ) 9.2 Power (pages ) 9.3 Mechanical Energy (page 147)
Exercises 9.1 Work (pages 145 146) 1. Circle the letter next to the correct mathematical equation for work. work = force distance work = distance force c. work = force distance d. work = force distance
WORK, POWER & ENERGY
WORK, POWER & ENERGY Work An applied force acting over a displacement. The force being applied must be parallel to the displacement for work to be occurring. Work Force displacement Units: Newton meter
GPE = m g h. GPE = w h. k = f d. PE elastic = ½ k d 2. Work = Force x distance. KE = ½ m v 2
1 NAME PERIOD PHYSICS GUIDESHEET ENERGY CONVERSIONS POTENTIAL AND KINETIC ENERGY ACTIVITY LESSON DESCRIPTION SCORE/POINTS 1. NT CLASS OVERHEAD NOTES (5 pts/page) (Plus 5 pts/page for sample questions)
Electric energy Radiant energy Nuclear energy
CHAPTER 7 LESSON 1: FORMS OF ENERGY Potential Energy Stored Energy Energy Kinetic Potential Work What is Energy? Mechanical Sound Thermal Electric Radiant Nuclear Potential is stored due to the interactions
WORK & ENERGY Work Work Energy Thm. Kinetic Energy Power Potential Energy Conservation of Energy
WORK & ENERGY Work Work Energy Thm. Kinetic Energy Power Potential Energy Conservation of Energy WORK & ENERGY Work: Transfer of energy through motion Energy: Ability to cause Change Kinetic Energy: Energy
a. Change of object s motion is related to both force and how long the force acts.
0. Concept of Energy 1. Work. Power a. Energy is the most central concept underlying all sciences. Concept of energy is unknown to Isaac Newton. Its existence was still debated in the 1850s. Concept of
Work and Energy. Describing Energy. Energy comes in many forms. List as many types of energy as you can think of on the lines below.
chapter 4 Work and section 2 Describing Before You Read comes in many forms. List as many types of as you can think of on the lines below. What You ll Learn the different forms of how can be stored Read
Unit 5: Energy (Part 2)
SUPERCHARGED SCIENCE Unit 5: Energy (Part 2) www.sciencelearningspace.com Appropriate for Grades: Lesson 1 (K-12), Lesson 2 (K-12) Duration: 6-15 hours, depending on how many activities you do! We covered
8.5 - Energy. Energy The property of an object or system that enables it to do work. Energy is measured in Joules (J).
Work Work The process of moving an object by applying a force. Work = Force x displacement. Work is measured in Joules (J) or Newton-meters (Nm). W = Fd Example: To prove his strength, a weightlifter pushes
NOTES Foldable must include: - Form of Energy name on OUTSIDE of flap - Definition - At least one example (picture OR word)
Unit 7: Energy. Bell Ringer: You are on a roller coaster 92 meters above the ground traveling at 14 m/s. You weigh 400 N (or approximately 40.8 kg). What is your mechanical energy? Show your work and include
Pre Comp Review Questions 7 th Grade
Pre Comp Review Questions 7 th Grade Section 1 Units 1. Fill in the missing SI and English Units Measurement SI Unit SI Symbol English Unit English Symbol Time second s second s. Temperature Kelvin K Fahrenheit
Slide 1 / 113. Slide 2 / th Grade. Energy of Objects in Motion Classwork-Homework Slide 3 / 113. Classwork #1: Energy
Slide 1 / 113 Slide 2 / 113 8th Grade Energy of Objects in Motion Classwork-Homework 2015-08-25 www.njctl.org Slide 3 / 113 Classwork #1: Energy 1 Define Energy. Slide 4 / 113 2 What two things are necessary
Work Done by a Constant Force
Work and Energy Work Done by a Constant Force In physics, work is described by what is accomplished when a force acts on an object, and the object moves through a distance. The work done by a constant
Chapter 9 Energy and Energy Resources. Copyright Houghton Mifflin Harcourt Publishing Company
Get Energized! What are two types of energy? Energy is the ability to cause change. Energy takes many different forms and causes many different effects. There are two general types of energy: kinetic energy
Unit 4 Lesson 1 Introduction to Energy. What are two types of energy? Energy is the ability to cause change.
Get Energized! What are two types of energy? Energy is the ability to cause change. Energy takes many different forms and causes many different effects. There are two general types of energy: kinetic energy
Practice Final C. 1. The diagram below shows a worker using a rope to pull a cart.
1. The diagram below shows a worker using a rope to pull a cart. 6. The graph below represents the relationship between gravitational force and mass for objects near the surface of Earth. The worker s
The Story of Energy. Forms and Functions
The Story of Energy Forms and Functions What are 5 things E helps us do? Batteries store energy! This car uses a lot of energy Even this sleeping puppy is using stored energy. We get our energy from FOOD!
Work. Kinetic and Potential Energy. Work. Transference of Energy Work = Force x distance. Supplemental Text Material Pages
Kinetic and Potential Energy Supplemental Text Material Page 36-333 Tranference of Energy = Force x ditance Lifting load againt the force of the weight of the object Twice the ditance reult in twice the
The six major forms of energy are: 1. Mechanical 2. Thermal 3. Chemical 4. Electrical 5. Electromagnetic 6. Nuclear
The six major forms of energy are: 1. Mechanical 2. Thermal 3. Chemical 4. Electrical 5. Electromagnetic 6. Nuclear Mechanical Energy Energy associated with the motion and position of everyday objects.
WORK, POWER, & ENERGY
WORK, POWER, & ENERGY In physics, work is done when a force acting on an object causes it to move a distance. There are several good examples of work which can be observed everyday - a person pushing a
Conceptual Understanding
Name Period Conceptual Understanding 1. Define work in scientific terms, and give the formula. What is it measured in? Work is a force applied over a distance to move and object. Force applied and object
Energy Unit Test * Required
Energy Unit Test * Required 1. First and Last Name 2. Class Period 2nd 4th Forms of Energy Standard 6.PS3.1 Analyze the properties and compare sources of kinetic, elastic potential, gravitational potential,
LESSON 15: Marshmallow Launcher ESTIMATED TIME Setup: minutes Procedure: minutes
LESSON 15: Marshmallow Launcher ESTIMATED TIME Setup: 10 15 minutes Procedure: 15 20 minutes DESCRIPTION Launch marshmallows from a plastic-spoon catapult to demonstrate the differences between potential
Today: Chapter 7 -- Energy
Today: Chapter 7 -- Energy Energy is a central concept in all of science. We will discuss how energy appears in different forms, but cannot be created or destroyed. Some forms are more useful than others
Work and Energy Energy Conservation
Work and Energy Energy Conservation MidterM 1 statistics Mean = 16.48 Average = 2.74 2 Clicker Question #5 Rocket Science!!! The major principle of rocket propulsion is: a) Conservation of energy b) Conservation
5.3. Conservation of Energy
5.3. Conservation of Energy Conservation of Energy Energy is never created or destroyed. Any time work is done, it is only transformed from one form to another: Kinetic Energy Potential Energy Gravitational,
What is it? What are the different types?
What is it? What are the different types? Energy definition Energy is a challenging concept to understand and explain Energy is an abstract concept that has slightly different definitions depending on
3 Types of Heat Transfer
3 Types of Heat Transfer The movement of heat from a warmer object to a cooler object. Heat Transfer- 1. Conduction Heat transfer by direct contact of molecules. In other words, when one molecule runs
Section 1 Work, Power, and Machines
Chapter 12 Work and Energy Section 1 Work, Power, and Machines Section 2 Simple Machines Section 3 What is Energy? Section 4 Conservation of Energy Skills Experiment Design SI Units and SI unit conversions
PHYSICS GUIDESHEET UNIT 5. - ENERGY SUBUNIT - ENERGY CONVERSIONS POTENTIAL AND KINETIC ENERGY ACTIVITY LESSON DESCRIPTION SCORE/POINTS
1 NAME PERIOD PHYSICS GUIDESHEET UNIT 5. - ENERGY SUBUNIT - ENERGY CONVERSIONS POTENTIAL AND KINETIC ENERGY ACTIVITY LESSON DESCRIPTION SCORE/POINTS 1. NT CLASS OVERHEAD NOTES (5 pts/page) /20 (Plus 5
Energy and Work ASSIGNMENT EDULABZ
Energy and Work ASSIGNMENT 1. Fill in the blank spaces by choosing the correct words from the list given below : List : created, constant, destroyed, work, force, mechanical energy, displacement, K.E.,
5.3: Calculate kinetic energy, gravitational potential energy, and elastic potential energy. Do Now: 1. Hand in your Forms of Energy Wheel
Do Now: 1. Hand in your Forms of Energy Wheel 2. Identify the following forms of energy: a. A hiker at the top of a mountain b. A dog chasing a cat c. A rubber band being stretched Agenda: How can we calculate
F=ma. Exam 1. Today. Announcements: The average on the first exam was 31/40 Exam extra credit is due by 8:00 am Friday February 20th.
Today Exam 1 Announcements: The average on the first exam was 31/40 Exam extra credit is due by 8:00 am Friday February 0th. F=ma Electric Force Work, Energy and Power Number 60 50 40 30 0 10 0 17 18 0
Work and the Work-Energy Theorem
Work and Energy Click on the topic to go to that section Energy and the Work-Energy Theorem Work and Energy 2009 by Goodman & Zavorotniy Forces and Potential Energy Conservation of Energy Power Conservation
WORK & ENERGY. Work W = Fdcosα 1. A force of 25.0 Newtons is applied so as to move a 5.0 kg mass a distance of 20.0 meters. How much work was done?
PHYSICS HOMEWORK #41 Work W = Fdcosα 1. A force of 25.0 Newtons is applied so as to move a 5.0 kg mass a distance of 20.0 meters. How much work was done? 2. A force of 120 N is applied to the front of
Energy. What is Energy? Energy is what makes matter move or change. It is the ability to do work and is needed in order to apply any type of force.
Energy ompanion w answers.notebook pril 18, 2012 Energy 8th Gr. What is Energy? Energy is what makes matter move or change. It is the ability to do work and is needed in order to apply any type of force.
Chapter 4 Work and Energy
James T. Shipman Jerry D. Wilson Charles A. Higgins, Jr. Omar Torres Chapter 4 Work and Energy Work being done by applied force (F ) through a distance (d ) Work = Force distance, W (J) = F. d where F
Chapter 6 Work and Energy
Chapter 6 Work and Energy Units of Chapter 6 Work Done by a Constant Force Work Done by a Varying Force Kinetic Energy, and the Work-Energy Principle Potential Energy Conservative and Nonconservative Forces
Lecture Notes (Work & Energy)
Lecture Notes (Work & Energy) Intro: - one of the most central concepts in science is energy; the combination energy and matter makes up our universe - matter is the substance of the universe, while energy
What is energy? The ability to cause change.
What is energy? The ability to cause change. THERMAL internal motion of particles The ability to cause change. NUCLEAR changes in the nucleus ENERGY MECHANICAL motion of objects CHEMICAL bonding of atoms
Gravitational Potential Energy and Motional Kinetic Energy Forms of energy Forms of energy include radiant energy from the sun, chemical energy from the food you eat, and electrical energy from the outlets
Energy and the Environment
Energy and the Environment Energy physics definition the capacity to do work and conjunction used to connect grammatically coordinate words, phrases, or clauses the Environment the aggregate of surrounding
WEP-Energy. 2. If the speed of a car is doubled, the kinetic energy of the car is 1. quadrupled 2. quartered 3. doubled 4. halved
1. A 1-kilogram rock is dropped from a cliff 90 meters high. After falling 20 meters, the kinetic energy of the rock is approximately 1. 20 J 2. 200 J 3. 700 J 4. 900 J 2. If the speed of a car is doubled,
Highlights of chapter 5, section 2
Highlights of chapter 5, section 2 2 Conservation of Energy Changing Forms of Energy There are situations around us every day that involve energy changing from one form to another form. There are many
Formula Chart. Net force = 2. ADD forces in the same direction. Magnitude is the size of a force.
8.6 A : demonstrate and calculate how unbalanced forces change the speed or direction of an object s motion Hemphill Middle School Science STAAR Review Reporting Category 2: Force, Motion, & Energy Force