Energy

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Name
Energy
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Part A. Vocabulary Review
Directions: Match the description in the first column with the term in the second column by writing the correct
letter in the space provided.
1. total amount of kinetic and potential energy
in a System
2. the ability to cause change
3. stored energy due to position
4. energy in the form of motion
5. Energy cannot be created or destroyed
6. unit used to measure energy m food
7. energy stored in chemical bonds
8. energy stored by things th&t stretch or compress
9. energy stored by things that are above earth
10. SI unit of energy
causes-somemechatiicaLenergjtochange to
thermal energy
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a. energy
b. friction
c. kinetic energy
d. law of conservation of
energy
e. gravitational potential
energy
f. mechanical energy
g. potential energy
h. Calorie
j• elastic potential
energy
j. chemical potential
energy
k. joule
Part B. Concept Review
Directions: Complete the following sentences using the correct terms.
1. The amount of kinetic energy a moving object has depends
on its mass and its
2. The potential energy of an’ object depends on its
‘S
(n
3. The energy stored in foods and fuels is
potential energy
4. The law of______ states that energy cannot be created
or destroyed.
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5. Nutritionists use the
get from foods.
to measure how much energy we
6. The conversion of potential energy to kinetic energy follows
I
the
7. You convert kinetic energy into thermal energy when you
rub two sticks together because of______
Energy 35
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Name :
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Chapter Review
Class:
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..
(continued)
8 The total energy of a system remains
.
9 An orange in a tree has
do óñ it. .:
-
—____
11 Use the equation KB =
velocity of 7 mIs
7
energy due to Earth pulling
10 A car engine changes chemical potential energy into the
energy of the moving car
xv
2 to calculate the kixietic evergy of a 100 kg cart moving at a
4
12 Use the equation GPE = m x 98 m/s
2 x h to calculate the gravitational potential of a 10-kg
sack of groceries on a shelf I m above the floor?
Directions Answer the following questions on the linesprovided
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13 A hammer falls off a roof top and strikes the ground with a certain kinetic energy. If it fell
from a roof twice as tall, how would its kinetic energy compare
7 Explain
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—
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l4 Explain why a more streamlined car generally will have better fuel economy than a bulkier
car
that has the same mass.
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36 Energy
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name
Date
Directed Reading for
content Mastery
Directions:
Draw a
Section 1
aass
The Nature
of Energy
line from each type of energy on the left to the example of this type of energy on the right.
1. kinetic energy
energy that is stored
2. chemical potential energy
energy stored in a stretched spring
3, gravitational potential energy
energy of a spinning bicycle wheel
4. elastic potential energy
5.
energy stored in food
potential energy
energy stored in a boulder on a
mountainside
Directions: Use these words to fill in the blanks below. Words may be used more than once.
energy
more
kinetic
less
joule
potential
chemical
6. Two baseballs have the same mass. The ball that is closer to the ground has
gravitational potential energy than the other ball does.
7. Two trucks have the same velocity but different mass. The truck with the
greater
mass has
kinetic energy than the other truck does.
8.
is the ability to cause change.
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9. A
is a unit of measure of all forms of energy.
10. ‘When an object falls, some of its
energy changes to
energy.
11. The
energy of an object depends on its mass and weight.
12. The energy of food and other fuels is
potential energy.
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0
I.
20 Energy
Name
Date
Class
• Key Terms
I Energy
0
Unscramble the terms in italics to compkte the sentences below. Write the terms on the lines pro vided,
then find the terms in the word search puzzle below.
Directions:
1. The stored energy an object has as a result of its
height above the ground is aaagiilnrottv potential
V energy.
V
V
2. The law of aceinnoorstv of energy states that the total
amount of energy in the universe remains the same.
3. Energy is measured in SI units called ejiosu.
4. The energy stored in the bonds between atoms is
accehilm potential energy.
V
5. The stored energy an object has as a result of its posi
V
tion is aeilnoptt energy.
•
6. Energy in the form of motion is ceiiknt energy.
V
7. An object’s aaccehilmn energy is its total amount of
potential and kinetic energy. V
8. The energy stored in stretched or compressed objects
V
is aceilst potential energy.
V
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VI
VI
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22 Energy
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Date
Name
Overview
Energy
Directions: Complete the concept map using the terms in the list below
motion
mechanical energy
potential energy
object
ergy
to
in
stored in an
Directions: Three forms ofpotential energy are gravitational, chemical, and elastic. Write the correct form in the
spaces beside the items below. Note that one item has two forms ofpotential energy.
U
5. chocolate chip cookie
C
aE
0
U
6. pogo stick on impact
7. gasoline
0
C
0
•
8. bicycle at the top of a hill
5
•0
9. stretched rubber band
I
10. apple in a tree
)
Energy 19