1m 100cm=1m =1 100cm 1m 89cm = 0.89m 100cm
|
|
- Morgan Neal
- 5 years ago
- Views:
Transcription
1 Units and Measurement Physics 40 Lab 1: Introduction to Measurement One of the most important steps in applying the scientific method is experiment: testing the prediction of a hypothesis. Typically we measure simple quantities of only three types: mass, length, and time. Occasionally we include temperature, electrical charge or light intensity. It is amazing, but just about everything we know about the universe comes from measuring these six quantities. Most of our knowledge comes from measurements of mass, length, and time alone. We will use the standard used by the international scientific community for measuring these quantities: the SI metric system. A measurement without a unit is meaningless! For more information, check out these websites: SI Base Units: Metric prefixes: Commonly used metric prefixes Often it is necessary to convert from one unit to another. To do so, you need only multiply the given quantity by a conversion factor which is a ratio equal to 1, derived from definitions. For example, there are 100 centimeters in a meter. You can make a conversion factor out of that definition so that if you need to convert 89cm to meters, simply multiply by the conversion factor, which is equal to 1: 1m 100cm=1m =1 100cm 1m 89cm = 0.89m 100cm You can make conversion factors out of the definitions listed in the tables above and in your book. Please always have leading zeros on decimals!! (0.89 and NOT.89)
2 Precision & Accuracy By their nature, measurements can never be done perfectly. Part of the error in making measurements may be due to the skill of the person making the measurement, but even the most skillful among us cannot make the perfect measurement. Basically this is because no matter how small we make the divisions on our ruler (using distance as an example) we can never be sure that the thing we are measuring lines up perfectly with one of the marks. Therefore the judgment of the person doing the measurement plays a significant role in the accuracy and precision of the measurement. Accuracy: Accuracy describes the nearness of a measurement to the standard or true value, i.e., a highly accurate measuring device will provide measurements very close to the standard, true or known values. Example: in target shooting a high score indicates the nearness to the bull's eye and is a measure of the shooter's accuracy. Precision: Precision is the degree to which several measurements provide answers very close to each other. It is an indicator of the scatter in the data. The lesser the scatter, the higher the precision. Ideally, we want to make measurements that are both accurate AND precise. However, we can never make a perfect measurement. The best we can do is to come as close as possible within the limitations of the measuring instruments. Uncertainty Since we can never make a perfect measurement, every measurement is approximate. Therefore it is important to always report the amount of confidence we have in our measurements, what we call experimental uncertainty. For example, you may estimate the length of the lab bench to be 5 meters give or take a meter. The give or take part is an expression of your confidence in your estimate. In scientific measurements we say plus or minus but it means the same as give or take. We write that our measurement of the length, represented by L is : L 5 m /-1m If you are using a scale such as a ruler to measure the length of an object, then your uncertainty is usually estimated to be one tenth the smallest division. For example, this bug has a length between 1.54 and 1.56 in or L 1.55 in /-0.01in. The 1.55in is the average measure and the 0.01in is the uncertainty. Error An experimental error is not a mistake! It is the difference between a measurement and an accepted value of something. For example, if you determine from an experiment that the acceleration due to gravity is 10 m/s 2 then the error is the difference or DISCREPENCY between that value and the accepted value of 9.8m/s 2, or 0.2m/s 2. The error can also be expressed as a percent: % error 100% 2% 9.8
3 Physics 40 Lab Section Print Names: Lab 1: Measurement Worksheet Equipment: ½, 1 and 2 meter rulers, digital caliper, various small metal objects Part I: Units, Metric Prefixes & Unit Conversion Show calculations. NEATNESS COUNTS!! 1. Convert 32 kilometers to nanometers. 2. If 1 light year = 9.46 x m and 1 mile = 1.6 km, how many miles are in a light year? 3. Explore the Universe in powers of 10! Step through the animation in manual mode. What is the power of 10 for each of the following? Milky Way Galaxy: Stars in the Milky Way Galaxy: Solar System: Earth and the Orbit of the Moon: Southwest Tallahassee: Oak Tree Branch: Cells on a Leaf: DNA Strand: Nucleus of a Carbon atom: Quark: By what power of 10 is the Milky Way Galaxy larger than the Nucleus of a Carbon Atom? Show your calculation. Box your final answer. Part 2. Precision and Accuracy Identify the following as either being Precise and Accurate, both or neither, by circling the words. Precise Precise Precise Precise Accurate Accurate Accurate Accurate
4 Part 3. Measuring Length & Uncertainty Make a thumb ruler by marking the size of your thumb starting on the left line and across the strip below. You will use the thumb ruler to measure the length of the computer screen but first GUESS the length in thumbs by eye balling it. Be sure to include +/- uncertainty in your guess and measurement. Guesstimate: Measurement: How close was your guess? How many thumbs off were you? Measuring with a metric ruler. When using a metric ruler, your uncertainty to the nearest one tenth of the space between the smallest scale divisions. Here are two metric rulers. Write the measurement in standard form with +/- uncertainty. Don t forget the units! Ruler on Left: Ruler on Right: Now measure the computer screen with a metric ruler. Again, first GUESS the length in cm by eye balling it. Be sure to include +/- uncertainty in your guess and measurement. Guesstimate: Measurement: How close was your guess? By what percent was your guess off? Measure the length of the metal object with a metric ruler. Write the measurement in standard form with +/- uncertainty. Don t forget the units! Metric Ruler Length: Measure the length of the metal object with a digital meter. In general, when using a digital meter, the uncertainty is ½ the digit not shown. What is that for your digital meter? Digital Meter Uncertainty: Write the measurement in standard form with +/- uncertainty. Don t forget the units! Digital Meter Length:
5
6
Introduction to Measurement
Units and Measurement Introduction to Measurement One of the most important steps in applying the scientific method is experiment: testing the prediction of a hypothesis. Typically we measure simple quantities
More informationLab 1: Measurement. PART 1: Exponential Notation: Powers of 10
Lab 1: Measurement Equipment: 2 meter sticks You will find these websites useful for today s lab: SI Base Units: http://physics.nist.gov/cuu/units/units.html Metric prefixes: http://physics.nist.gov/cuu/units/prefixes.html
More informationMeasurements. October 06, 2014
Measurements Measurements Measurements are quantitative observations. What are some kinds of quantitative observations you might make? Temperature Volume Length Mass Student A and Student B measured the
More informationLab 1: Measurement, Uncertainty, and Uncertainty Propagation
Lab 1: Measurement, Uncertainty, and Uncertainty Propagation 17 ame Date Partners TA Section Lab 1: Measurement, Uncertainty, and Uncertainty Propagation The first principle is that you must not fool yourself
More informationChemistry Basic Science Concepts. Observations: are recorded using the senses. Examples: the paper is white; the air is cold; the drink is sweet.
Note Packet # 1 1 Chemistry: the study of matter. Chemistry Basic Science Concepts Matter: anything that has mass and occupies space. Observations: are recorded using the senses. Examples: the paper is
More informationMetric Prefixes UNITS & MEASUREMENT 10/6/2015 WHY DO UNITS AND MEASUREMENT MATTER?
UNITS & MEASUREMENT WHY DO UNITS AND MEASUREMENT MATTER? Chemistry In Action On 9/3/99, $15,000,000 Mars Climate Orbiter entered Mar s atmosphere 100 km (6 miles) lower than planned and was destroyed by
More informationPhysics. Nov Title: Nov 3 8:52 AM (1 of 45)
Physics Nov 3 2008 Title: Nov 3 8:52 AM (1 of 45) Physics Nov 3 2008 Physics is the branch of science that studies matter and energy, how they are related and how they interact. Physics covers everything
More informationChapter 2 Using the SI System in Science
Chapter 2 Using the SI System in Science Section 2.1 SI System Units Terms: Measurement Precision Accuracy A measurement is a repeatable observation of a quantity that includes a number and unit. An estimate
More informationIntroduction to 1118 Labs
Name: Partner(s): 1118 section: Desk # Date: Introduction to 1118 Labs Introductory materials are at: www.langaraphysics.com/lab.html. You may find following 3 links useful for this lab: Measurements:
More informationNotes: Unit 1: Math and Measurement
Name: Regents Chemistry: Notes: Unit 1: Math and Measurement www.chempride.weebly.com Key Ideas Major Understandings: o Chemistry is the study of matter: Matter takes up space and has mass. (K- 4, 3.1a)
More informationNotes: Unit 1: Math and Measurement
Name: Regents Chemistry: Notes: Unit 1: Math and Measurement www.chempride.weebly.com Key Ideas Major Understandings: o Chemistry is the study of matter: Matter takes up space and has mass. (K- 4, 3.1a)
More informationMeasurement: Length, Area and Volume Part I
IDS 101 Name Measurement: Length, Area and Volume Part I If we ask someone the size of a common object, such as a dime or penny, most people come pretty close to the actual size. However, objects that
More informationPHY 123 Lab 1 - Error and Uncertainty and the Simple Pendulum
To print higher-resolution math symbols, click the Hi-Res Fonts for Printing button on the jsmath control panel. PHY 13 Lab 1 - Error and Uncertainty and the Simple Pendulum Important: You need to print
More informationMeasurement Error PHYS Introduction
PHYS 1301 Measurement Error Introduction We have confidence that a particular physics theory is telling us something interesting about the physical universe because we are able to test quantitatively its
More informationMeasurement Error PHYS Introduction
PHYS 1301 Measurement Error Introduction We have confidence that a particular physics theory is telling us something interesting about the physical universe because we are able to test quantitatively its
More informationAnswer Key. Name: Seventh Grade Science Teacher: Page 1
Name: Seventh Grade Science Teacher: Page 1 Different tools in the SI system all measure to different precisions It doesn t matter what tool you are using as long as you remember to always measure to the
More informationUncertainty in Measurements
Uncertainty in Measurements! Two kinds of numbers " Exact! counted values " 2 dogs " 26 letters " 3 brothers! defined numbers " 12 inches per foot " 1000 g per kilogram " 2.54 cm per inch Metric Practice!
More informationPhysics 2A Lab 1 Measuring Human Reaction Time
Physics 2A Lab 1 Measuring Human Reaction Time Lana Sheridan De Anza College Sept 25, 2018 Overview Discussion of laboratory work Theory Equipment Procedure Why we do lab work To confirm or disprove hypotheses
More information1 Measurement Uncertainties
1 Measurement Uncertainties (Adapted stolen, really from work by Amin Jaziri) 1.1 Introduction No measurement can be perfectly certain. No measuring device is infinitely sensitive or infinitely precise.
More informationMeasurement and Uncertainty
Measurement and Uncertainty Name: Date: Block: There is uncertainty in every measurement due to of accuracy and precision. Accuracy: how close the instrument measures to an accepted. Precision: how closely
More information(Significant Digits are in BOLD type and the non-significant digits are underlined)
Name Per. Date Significant Digits Worksheet Significant digits (or significant figures) are used to represent the accuracy of a measurement. In a measurement the significant digits represent all the reliable
More informationCHM Accuracy, Precision, and Significant Figures (r14) C. Taylor 1/10
CHM 110 - Accuracy, Precision, and Significant Figures (r14) - 2014 C. Taylor 1/10 Introduction Observations are vitally important to all of science. Some observations are qualitative in nature - such
More informationAP Environmental Science Math Prep
AP Environmental Science Math Prep This year in APES you will hear the two words most dreaded by high school students NO CALCULATORS! That s right, you cannot use a calculator on the AP Environmental Science
More informationScientific Method, Units of Measurement, Scientific Notation, Significant Figures BASICS OF PHYSICAL SCIENCE
Scientific Method, Units of Measurement, Scientific Notation, Significant Figures BASICS OF PHYSICAL SCIENCE EQ: WHAT IS PHYSICAL SCIENCE? The sciences can be divided into 2 main branches: and Natural
More informationLiquid-in-glass thermometer
Objectives Liquid-in-glass thermometer The objectives of this experiment is to introduce some basic concepts in measurement, and to develop good measurement habits. In the first section, we will develop
More informationChapter 1. A Physics Toolkit
Chapter 1 A Physics Toolkit Chapter 1 A Physics Toolkit In this chapter you will: Use mathematical tools to measure and predict. Apply accuracy and precision when measuring. Display and evaluate data graphically.
More informationMeasurement Challenge Measurement Lab Activities
Introduction Measurement Challenge Measurement Lab Activities Take the measurement challenge! Accurately estimate the length, width, and height of a small plastic block and calculate the block s volume.
More informationIntroduction to Physics Physics 114 Eyres
What is Physics? Introduction to Physics Collecting and analyzing experimental data Making explanations and experimentally testing them Creating different representations of physical processes Finding
More informationUNIT 1: NATURE OF SCIENCE
Nature of Science UNIT 1: NATURE OF SCIENCE Chapter 1.1-1.3, pages 6-26 Honors Physical Science Pure science aims to come to a common understanding of the universe Scientists suspend judgment until they
More informationPrinciples and Problems. Chapter 1: A Physics Toolkit
PHYSICS Principles and Problems Chapter 1: A Physics Toolkit CHAPTER 1 A Physics Toolkit BIG IDEA Physicists use scientific methods to investigate energy and matter. CHAPTER 1 Table Of Contents Section
More informationPHYS133 Lab 1 Math Review
PHYS133 Lab 1 Goal: To review mathematical concepts that will be used in this course. What You Turn In: The worksheet in this manual. Background: This course requires the use of several concepts from high
More information1 Measurement Uncertainties
1 Measurement Uncertainties (Adapted stolen, really from work by Amin Jaziri) 1.1 Introduction No measurement can be perfectly certain. No measuring device is infinitely sensitive or infinitely precise.
More informationThe number of stars in a galaxy is an example of an estimate that should be expressed in scientific notation.
3.1 Using and Expressing Measurements A measurement is a quantity that has both a number and a unit. Using and Expressing Measurements In scientific notation, a given number is written as the product of
More informationDensity of Brass: Accuracy and Precision
Density of Brass: Accuracy and Precision Introduction Density is a measure of a substance s mass-to-volume ratio. For liquids and solids, density is usually expressed in units of g/ml or g/cm 3 ; these
More informationLab 1: Measurement Errors Adapted from Holtzman's Intro Lab for Astr110
Lab 1: Measurement Errors Adapted from Holtzman's Intro Lab for Astr110 Purpose: to give students practice making measurements and estimating error, as an introduction to understanding measurements in
More informationSPH3U1 Lesson 03 Introduction. 6.1 Expressing Error in Measurement
SIGNIFICANT DIGITS AND SCIENTIFIC NOTATION LEARNING GOALS Students will: 6 ERROR Describe the difference between precision and accuracy Be able to compare values quantitatively Understand and describe
More informationEXPERIMENT 1 Chemistry 110 LABORATORY SAFETY
EXPERIMENT 1 Chemistry 110 LABORATORY SAFETY MEASUREMENTS PURPOSE: The Purpose of this laboratory exercise is for the students to develop the skills of measuring length, volume, mass and temperature and
More informationPhy 100 s Lab - Measurement techniques for mass, size and density. Name Course & Sec. Lab Partner
Phy 100 s Lab - techniques for mass, size and density. Name Course & Sec Lab Partner Date 1. You should have a metal block and a metal cylinder both made of the same material. If you are unsure if the
More informationEvery time a measurement is taken, we must be aware of significant figures! Define significant figures.
SCHM 103: FUNDAMENTALS OF CHEMISTRY Ch. 2: Numerical Side of Chemistry Types of data collected in experiments include: Qualitative: Quantitative: Making Measurements Whenever a piece of data is collected,
More informationSCIENCE 1206 Unit 3. Physical Science Motion
SCIENCE 1206 Unit 3 Physical Science Motion Section 1: Units, Measurements and Error What is Physics? Physics is the study of motion, matter, energy, and force. Qualitative and Quantitative Descriptions
More informationLiquid-in-glass thermometer
Liquid-in-glass thermometer Objectives The objective of this experiment is to introduce some basic concepts in measurement, and to develop good measurement habits. In the first section, we will develop
More informationAP Environmental Science Math Prep
AP Environmental Science Math Prep Courtesy of Kara House, Franklin Central High School, Indiana This year in APES you will hear the two words most dreaded by high school students NO CALCULATORS! That
More informationPre-Lab 0.2 Reading: Measurement
Name Block Pre-Lab 0.2 Reading: Measurement section 1 Description and Measurement Before You Read Weight, height, and length are common measurements. List at least five things you can measure. What You
More informationMethods and Tools of Physics
Methods and Tools of Physics Order of Magnitude Estimation: Essential idea: Scientists aim towards designing experiments that can give a true value from their measurements, but due to the limited precision
More informationLECSS Physics 11 Introduction to Physics and Math Methods 1 Revised 8 September 2013 Don Bloomfield
LECSS Physics 11 Introduction to Physics and Math Methods 1 Physics 11 Introduction to Physics and Math Methods In this introduction, you will get a more in-depth overview of what Physics is, as well as
More informationThe SuperBall Lab. Objective. Instructions
1 The SuperBall Lab Objective This goal of this tutorial lab is to introduce data analysis techniques by examining energy loss in super ball collisions. Instructions This laboratory does not have to be
More informationAccuracy, Precision, and Significant Figures
Accuracy, Precision, and Significant Figures Bởi: OpenStaxCollege A double-pan mechanical balance is used to compare different masses. Usually an object with unknown mass is placed in one pan and objects
More informationThe periodic table currently lists 116 different atoms. New atoms are being discovered.
CHEM100 Week 1 Notes Page 1 of 11 Chemistry is the study of matter. Matter is made up of atoms. The periodic table currently lists 116 different atoms. New atoms are being discovered. Atoms consist of
More informationCorner Brook Regional High School
Corner Brook Regional High School Measurement and Calculations Significant Digits Scientific Notation Converting between Units Accuracy vs. Precision Scalar Quantities Distance Calculations Speed Calculations
More informationMeasurements, Sig Figs and Graphing
Measurements, Sig Figs and Graphing Chem 1A Laboratory #1 Chemists as Control Freaks Precision: How close together Accuracy: How close to the true value Accurate Measurements g Knowledge Knowledge g Power
More informationLAB 1 PRE-LAB. residuals (cm)
LAB 1 PRE-LAB 1. The table below records measurements of the lengths l of five goldfish. Calculate the average length l avg of this population of goldfish, and the residual, or deviation from average length
More informationBase unit-a defined unit of measurement based on an object or event in the physical world. Length
Base unit-a defined unit of measurement based on an object or event in the physical world Five base units: Temperature Mass Length Time Energy Derived unit-a unit of measurement defined by a combination
More informationCHAPTER 2 Data Analysis
CHAPTER 2 Data Analysis 2.1 Units of Measurement The standard of measurement used in science are those of the metric system. All the units are based on 10 or multiples of 10. SI Units: The International
More informationElements are pure substances that cannot be broken down by chemical means.
CHEM Week (Measurement, Calculation) Page of Chemistry is the study of matter. Matter is made up of atoms. The periodic table currently lists different elements or atoms. Elements are pure substances that
More informationContents Decimals Averages Percentages Metric Units Scientific Notation Dimensional Analysis
This year in APES you will hear the two words most dreaded by high school students NO CALCULATORS! That s right, you cannot use a calculator on the AP Environmental Science exam. Since the regular tests
More informationSection 1 What Is Physics? Chapter 1. The Branches of Physics. Houghton Mifflin Harcourt Publishing Company
Section 1 What Is Physics? The Branches of Physics Section 1 What Is Physics? Physics The goal of physics is to use a small number of basic concepts, equations, and assumptions to describe the physical
More informationExpress in Scientific Notation
Scientific Notation A shorthand method of displaying very large (distance to the sun) or very small numbers (lengths of atoms). Consists of a coefficient, a base 10, and an exponent e.g. 3.95 x 10 3 The
More informationEQ: How do we use the metric system in science?
#2 EQ: How do we use the metric system in science? Introduction to the Metric System In science class, we will be using the International System (SI) for measurements. (SI is French for Systeme Internationale)
More informationCOLLEGE PHYSICS. Chapter 1 INTRODUCTION: THE NATURE OF SCIENCE AND PHYSICS. Lesson 2
COLLEGE PHYSICS Chapter 1 INTRODUCTION: THE NATURE OF SCIENCE AND PHYSICS Lesson 2 Video Narrated by Jason Harlow, Physics Department, University of Toronto MEASUREMENTS Here are two different kinds of
More informationUsing Scientific Measurements
Section 3 Main Ideas Accuracy is different from precision. Significant figures are those measured precisely, plus one estimated digit. Scientific notation is used to express very large or very small numbers.
More informationMeasurement. Weight, height, and length are common measurements. List at least five things you can measure.
chapter 32 Measurement section 1 Description and Measurement Before You Read Weight, height, and length are common measurements. List at least five things you can measure. What You ll Learn how to estimate
More informationChapter 2 Measurements & Calculations. Quantity: A thing that can be measured. ex. Length (6.3 ft), mass (35 kg), and time (7.2 s)
Chapter 2 Measurements & Calculations Quantity: A thing that can be measured. ex. Length (6.3 ft), mass (35 kg), and time (7.2 s) Measurements can be expressed in a variety of units: Example: length(cm,
More informationTable One. Mass of a small package using three different measurement methods
MS20 Laboratory Scientific Measurements and the Metric System Objectives To understand how to make measurements utilizing various instruments To learn how to use the metric system To convert between the
More information8th Grade Scientific Notation
Slide 1 / 137 Slide 2 / 137 8th Grade Scientific Notation 2015-11-20 www.njctl.org Slide 3 / 137 Table of Contents Click on the topic to go to that section Purpose of Scientific Notation Writing Numbers
More information8th Grade Scientific Notation
Slide 1 / 137 Slide 2 / 137 8th Grade 2015-11-20 www.njctl.org Slide 3 / 137 Slide 4 / 137 Table of Contents Click on the topic to go to that section Purpose of Writing Numbers in Converting Between and
More informationThe Methods of Science
1 The Methods of Science What is Science? Science is a method for studying the natural world. It is a process that uses observation and investigation to gain knowledge about events in nature. 1 The Methods
More informationProton. Size of cell. 100 = 10 2, so the logarithm of 100 is 2, written Log 100= 2
Homework 1 Date Due Name You will be making a chart of the sizes of things in the Universe. It should come out similar to Figure., but more precise. The plot you will be working on is at the end of this
More informationPhysical Science Density and Measurements
Physical Science Density and Measurements Name Date Density All matter has a mass that can be measured and a volume of space that it occupies. However, the relationship between mass and volume varies greatly
More informationThe Essentials to the Mathematical world
The Essentials to the Mathematical world There is nothing that is unachievable, any person can start the journey to you are starting, never give into hopelessness and always push on because nothing is
More informationHW #1: 1.42, 1.52, 1.54, 1.64, 1.66, 1.70, 1.76, 1.78, 1.80, 1.82, 1.84, 1.86, 1.92, 1.94, 1.98, 1.106, 1.110, 1.116
Chemistry 121 Lecture 3: Physical Quantities Measuring Mass, Length, and Volume; Measurement and Significant Figures; Scientific Notation; Rounding Review Sections 1.7-1.11 in McMurry, Ballantine, et.
More informationMeasurement and Measurement Errors
1 Measurement and Measurement Errors Introduction Physics makes very general yet quite detailed statements about how the universe works. These statements are organized or grouped together in such a way
More informationLarge & Small Numbers
Large & Small Numbers Scientists frequently work with very large or small numbers. Astronomers work with galaxies that contain billions of stars at great distances from us. On the other hand, biologists
More informationChapter 1 Review Problems (Done in Class)
Chapter 1 Measurement Review Problems Chapter 1 Review Problems (Done in Class) Section - problems Sec 1, p. 8 # 2, 5, 6, 8, 9 Sec 2, p. 12 # 1, 3, 4, 5, 7, 8 Sec 3, p.17 # 3, 4, 5 Sec 4, p. 23 # 3, 6,
More informationFull file at InvestigationWksht01.pdf 02_Measurement_in_Biology_Prep.pdf Exercise_02.pdf
InvestigationWksht01.pdf 02_Measurement_in_Biology_Prep.pdf Exercise_02.pdf INVESTIGATION WORKSHEET 1 How Temperature Affects the Production of CO 2 by Yeast Name Observation: Fermentation of nutrients
More informationPH 221-1D Spring 2013
PH 221-1D Spring 2013 Introduction and Measurement Lecture 1 Chapter 1 (Halliday/Resnick/Walker, Fundamentals of Physics 9 th edition) The Nature of Physics The science of physics has developed out of
More informationPrecision and Accuracy. Learning Targets: Unit 2.1 To determine the degree of precision of a measurement.
Precision and Accuracy Learning Targets: Unit.1 To determine the degree of precision of a measurement. We often use numbers that are not exact. Measurements are approximate there is no such thing as a
More informationCorner Brook Regional High School
Corner Brook Regional High School Measurement and Calculations Significant Digits Scientific Notation Converting between Units Accuracy vs. Precision Scalar Quantities Distance Calculations Speed Calculations
More information3. What is the decimal place of the least significant figure (LSF) in the number 0.152? a. tenths place b. hundredths place c.
Name: Significant Digits, Unit Conversions, Graphing and Uncertainties in Measurements =========================================================== Choose the best answer. (30 pts total) Significant Digits,
More informationDevelop problem solving skil s
General Physics 1 Class Goals Develop problem solving skills Learn the basic concepts of mechanics and learn how to apply these concepts to solve problems. Build on your understanding of how the world
More informationAppendix A: Significant Figures and Error Analysis
1 Appendix A: Significant Figures and Error Analysis Every measurement of a physical quantity contains some amount of uncertainty or error. We often speak of a certain number or measurement as being precise
More informationLecture 1. Chapter 1 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition)
PH 221-3A Fall 2009 Introduction and Measurement Lecture 1 Chapter 1 (Halliday/Resnick/Walker, Fundamentals of Physics 8 th edition) The Nature of Physics The science of physics has developed out of the
More informationAccelerated Chemistry Study Guide What is Chemistry? (Chapter 1)
Accelerated Chemistry Study Guide What is Chemistry? (Chapter 1) Conversion factor Density Uncertainty Significant digits/figures Precision Accuracy Percent error September 2017 Page 1 of 32 Scientific
More informationScientific Measurement
A measurement is a quantity that has both a number and a unit Some numbers encountered in science can be either very large or very small We use scientific notation to make those numbers easier to work
More informationDownloaded from
Chapter 2 (Units and Measurements) Single Correct Answer Type Q1. The number of significant figures in 0.06900 is (a) 5 (b) 4 (c) 2 (d) 3 Sol: (b) Key concept: Significant figures in the measured value
More informationFundamentals of data, graphical, and error analysis
Fundamentals of data, graphical, and error analysis. Data measurement and Significant Figures UTC - Physics 030L/040L Whenever we take a measurement, there are limitations to the data and how well we can
More informationAccuracy and Precision of Laboratory Glassware: Determining the Density of Water
Accuracy and Precision of Laboratory Glassware: Determining the Density of Water During the semester in the general chemistry lab, you will come into contact with various pieces of laboratory glassware.
More informationIn chemistry we use metric units (called SI units after the French term for Systeme internationale.
Metric system / SI units: In chemistry we use metric units (called SI units after the French term for Systeme internationale. SI units: The SI units we ll be primarily concerned with are shown here: Base
More informationIntroduction to Science. Section 1: The Nature of Science Section 2: The Way Science Works Section 3: Organizing Data
Introduction to Science Section 1: The Nature of Science Section 2: The Way Science Works Section 3: Organizing Data Section 1: The Nature of Science Key Terms Science Technology Scientific Law Scientific
More informationExperiment 1 - Mass, Volume and Graphing
Experiment 1 - Mass, Volume and Graphing In chemistry, as in many other sciences, a major part of the laboratory experience involves taking measurements and then calculating quantities from the results
More informationNotes: Measurement and Calculation
Name Chemistry-PAP Per. I. The Basics of Measurement Notes: Measurement and Calculation A. Measurement Most provide quantitative information, but because they are obtained experimentally, they are inexact.
More informationUnits and Dimensionality
Chapter 1 Units and Dimensionality If somebody asked me how tall I am, I might respond 1.78. But what do I mean by that? 1.78 feet? 1.78 miles? In fact, my height is 1.78 meters. Most physical measurements
More informationOur Place in the Universe (Chapter 1) The Structure and Size of the Universe
Our Place in the Universe (Chapter 1) The Structure and Size of the Universe Based on Chapter 1 This material will be useful for understanding Chapters 2, 3, and 13 on Years, Seasons, and Months, The Orbits
More informationSignificant Digits and Measurement
Significant Digits and Measurement What digits are significant when recording a measurement? Scientists do a lot of measuring. When scientists use an instrument (such as a ruler, graduated cylinder, spectrophotometer
More informationUnit 1 Introduction to Chemistry & Data Analysis Chapters 1 2 of your book.
Unit 1 Introduction to Chemistry & Data Analysis Chapters 1 2 of your book. Early Booklet E.C.: / 2 Unit 1 Hwk. Pts: / 29 Unit 1 Lab Pts: / 56 Late, Incomplete, No Work, No Units Fees? Y / N Learning Targets
More informationMeasurement. Scientific Notation. Measurements and Problem Solving. Writing Numbers in Scientific Notation
Measurement Chapter 2 Measurements and Problem Solving Quantitative observation Comparison based on an accepted scale e.g. Meter stick Has 2 parts number and unit Number tells comparison Unit tells scale
More informationEXPERIMENTAL UNCERTAINTY
3 EXPERIMENTAL UNCERTAINTY I am no matchmaker, as you well know, said Lady Russell, being much too aware of the uncertainty of all human events and calculations. --- Persuasion 3.1 UNCERTAINTY AS A 95%
More informationGraphical Data Analysis Minneapolis Community and Tech. College v Experimental Measurements. Graphical Analysis and Straight lines
Graphical Data Analysis Minneapolis Community and Tech. College v.8.08 Experimental Measurements All experimentally measured numbers consist of one or more exact numbers that contain no uncertainty and
More informationScientific Notation and Scaled Models
Scientific Notation and Scaled Models Topic Scientific notation is a practical way to compare the sizes of bodies in the solar system. Introduction Scientific notation was developed to aid scientists in
More informationThe Grammar and Etiquette of Scientific Math By T. Webb HHS
The Grammar and Etiquette of Scientific Math By T. Webb HHS You can be a mathematician without a lot of science, however, you cannot be a scientist without math Part 1 - Terminology in Basic Data Analysis
More informationUncertainty and Graphical Analysis
Uncertainty and Graphical Analysis Introduction Two measures of the quality of an experimental result are its accuracy and its precision. An accurate result is consistent with some ideal, true value, perhaps
More information