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Foldables
Video Clips and Animations
Standardized Test Practice
Chapter ResourcesChapter Resources
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Chapter Review Questions
Chapter Summary
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red.msscience.com
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To transfer images to your own power point follow the following steps:
• Open the “Resource” file from the CD-ROM disc – view the file in the “normal view” or “slide sorter view” mode - go to slide #2 – from there you can click through the images and follow these instructions. Click once on the image.
• Copy the image
• Go to your own power point document
• Paste the image.
Transfer Images
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Thunderstorm
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Nuclear Power Plant
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Playing Soccer
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Throwing a Ball
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Bowling Ball Knocking Down Pins
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Potential Energy
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Maximum Kinetic Energy
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Kinetic Energy Transformed Into Potential Energy
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Potential Energy Transformed into Kinetic Energy
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Waterfall
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Particles that Do Not Move in a Single Direction
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Molecules and Particles
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Measuring Temperature
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The Fahrenheit Scale
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Celsius Scale
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Overheated Car
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Bumping Along
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Copper Wire
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Insulated Handle
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Hummingbird Feeder
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Examples of Convection
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Fire Burning
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Energy in Reactions
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Energy in Reactions
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Photosynthesis
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Burning
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Rust
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Changing the Rate of Reaction
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FoldablesFoldables
Energy
Make the following Foldable to help you understand the different ways energy can be transformed.
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FoldablesFoldables
Fold a sheet of paper in half lengthwise.
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FoldablesFoldables
Fold paper down 2.5 cm from the top. (Hint: From the tip of your index finger to your middle knuckle is about 2.5 cm.)
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FoldablesFoldables
Open and draw lines along the 2.5 cm fold. Label as shown.
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FoldablesFoldables
As you read the chapter, write answers to what each form of energy can be changed to under the Changed To heading on your Foldable. On the back of your Foldable describe what caused each form of energy to change and explain the effects of the change.
Cause and Effect
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Video ClipsVideo Clips
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Video ClipsVideo Clips
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• Energy is the ability to cause change.
Energy Changes
• Energy can have different forms. Energy can be transformed from one form into another.
11Reviewing Main IdeasReviewing Main Ideas
• Kinetic energy is the energy an object has due to its motion. Kinetic energy increases as the speed of an object increases.
• Potential energy is stored energy that increases as an object’s height increases.
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• Temperature is a measure of the average kinetic energy of the particles in a material.
Temperature
• The movement of energy from a warmer object to a cooler one is called heat.
22Reviewing Main IdeasReviewing Main Ideas
• Heat can be transferred by conduction, convection, and radiation.
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• The energy stored in chemical bonds is chemical energy.
Chemical Energy
• Chemical reactions can release or absorb energy. Exothermic reactions are chemical reactions that release energy. Endothermic reactions absorb energy.
33Reviewing Main IdeasReviewing Main Ideas
• Changing the temperature and adding catalysts can change the rate of chemical reactions.
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Question 1
Chapter ReviewChapter Review
Why does convection usually occur in liquids and gases, but not in solids?
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Answer
Chapter ReviewChapter Review
In liquids and gases, atoms and molecules are free to move from place to place. As a result, they can transfer energy by moving from a warmer place to a cooler place in a material. In solids, atoms and molecules don’t move from place to place within the solid.
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Question 2
Chapter ReviewChapter Review
In an exothermic reaction, heat energy is _______.
A. absorbedB. createdC. destroyedD. released
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Answer
Chapter ReviewChapter Review
The answer is D. Exothermic reactions release heat energy.
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Question 3
Chapter ReviewChapter Review
How does the Sun’s energy reach Earth?
AnswerThe Sun’s energy reached Earth by radiation. The other forms of heat transfer can’t occur through empty space.
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Question 4
Chapter ReviewChapter Review
One of the reasons the handle of a pan is made of wood rather than metal is that wood does not transfer heat as quickly from the hot pan to your hand. In other words, wood is a poor _______.
A. conductorB. coolantC. insulatorD. thermometer
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Answer
Chapter ReviewChapter Review
The answer is A. Wood is a poor conductor of heat energy.
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Question 5
Chapter ReviewChapter Review
Chemical energy is a form of which type of energy?
A. kinetic energyB. nuclear energyC. heat energyD. potential energy
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Answer
Chapter ReviewChapter Review
The answer is D. Chemical energy is a form of potential energy that is stored in the binds between atoms in a compound.
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Standardized Test PracticeStandardized Test Practice
Question 1
Burning is a(n) _______ chemical reaction.
A. endothermicB. exothermicC. photosynthesisD. kinetic
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is B. Because heat is released, the chemical reaction is exothermic.
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Standardized Test PracticeStandardized Test Practice
Question 2
The temperature of a material increases when the atoms in the material _____.
A. move closer togetherB. move farther apartC. move fasterD. move slower
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is C. When temperature increases, the atoms are moving faster and have more kinetic energy.
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Standardized Test PracticeStandardized Test Practice
Question 3
As the height of a ball increases, its _____ energy increases.
A. kineticB. electricalC. heatD. potential
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is D. When the height of an object increases, its potential energy increases.
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Standardized Test PracticeStandardized Test Practice
Question 4
As water falls from the top of a waterfall, which forms of energy are changing?
A. electrical and chemicalB. kinetic and potentialC. kinetic and electricalD. potential and nuclear
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Standardized Test PracticeStandardized Test Practice
Answer
The correct answer is A. Kinetic energy is the energy of motion.
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Standardized Test PracticeStandardized Test Practice
Question 5
What determines the kinetic energy of an object?
A. only its massB. only its speedC. both its mass and speedD. both its mass and speed as well as its direction
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Standardized Test PracticeStandardized Test Practice
Answer
The answer is C. Mass and speed are the two factors you need to know to determine the kinetic energy of an object.
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