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PS Energy Review 1/30

Total questions: 60

Worksheet time: 2hrs 48mins

Name
Class
Date
1.
What is work?
a)
Force x Distance
b)
Force / Distance
c)
Distance / Force
d)
Force + Distance
2.

A 2kg television falls from 1 meter. How much energy does it have?

a)

19.6 J

b)

196 J

c)

2 J

d)

9.8J

3.
Describe the substance between letters A and B. 
a)
Solid
b)
Liquid
c)
Melting
d)
Evaporating
4.
When does that ball have the greatest potential energy?
a)
A
b)
B
c)
C
d)
D
5.
The unit used to measure work is the 
a)
Watt
b)
Newton
c)
Joule
d)
meter
6.
Describe the substance between letters E and F. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
7.
The balloon with initial volume 15 cm3 when immersed in ice water at 2oC expand to a volume V when put into a boiling water at temperature 100oC. Find V
a)
750 cm3
b)
75 cm3
c)
20.3 cm3
d)
23.0 cm3
8.
How many states of matter are present during line segment BC?
a)
One
b)
Two
c)
Three
d)
Depends on the temperature
9.
True or false: melting and freezing occur at the same temperature.
a)
True
b)
False
10.
What is the heat of vaporization for this substance?
a)
20 kJ
b)
10 kJ
c)
30 kJ
d)
80 kJ
11.

If Jay Loppy pushes his van 20 meters how much work is done?

a)

2,000J

b)

40,000J

c)

10,000J

d)

800,000J

12.
What is the heat of fusion for this substance?
a)
20 kJ
b)
10 kJ
c)
30 kJ
d)
80 kJ
13.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
14.

When a pendulum swings, at which point is potential energy at its greatest?

a)

1

b)

2

c)

3

d)

4

15.

As an object falls its __________ energy decreases and its kinetic energy increases

a)

potential

b)

chemical

c)

thermal

d)

electric

16.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
17.

A 50kg (100lb) person is running at 7m/s (about 16 mph). How much kinetic energy do they have?

a)

1225 J

b)

180000 J

c)

294 J

d)

3920000 J

18.
What is the definition of CONVECTION
a)
When heat transfers through waves.
b)
When heat transfers from objects that are touching.
c)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
d)
Heat traveling from the sun
19.
Describe the substance between letters D and E. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
20.
Which one is a unit of distance?
a)
meter (m)
b)
gram (g)
c)
liter (L)
d)
Joule (J)
21.

A hurricane is a heat engine which converts one kind of energy into another. Hurricanes convert MOST of the heat energy into

a)

chemical energy.

b)

potential energy

c)

electrical energy.

d)

mechanical energy.

22.
Which one is a unit of mass?
a)
meter (m)
b)
gram (g)
c)
Joule (J)
d)
Newton (N)
23.
 Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
24.
Between which points is the substance changing its state of matter?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
25.
What is work?
a)
A push or pull.
b)
When the object moves in the same direction in which the force is exerted.
c)
A change in energy.
d)
The rate at which energy is transferred.
26.

What is given off from energy?

a)

water

b)

heat

c)

smoke

d)

ash

27.
What kind of energy is in a rock at the edge of a cliff?
a)
Potential
b)
Kinetic
28.

What is the kinetic energy of a 1,600kg Mustang travelling at 15 m/s (33mph)

a)

180000 J

b)

294 J

c)

1225 J

d)

3920000 J

29.
Diagram above shows the heating curve of naphthalene. Why the temperature remains constant along BC and DE?
a)
Heat energy is used to increase the kinetic energy of molecules.
b)
Heat energy is used to break the inter molecular forces between molecules.
c)
Heat energy is lost to surrounding.
d)
Heat energy is used to build up  the inter molecular forces between molecules.
30.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
31.

What is the KE 1/2 of the way down?

a)

15,000 J

b)

3,750 J

c)

7,500 J

d)

11,250 J

32.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
33.
Animals obtain their energy from ....... 
a)
Food
b)
Sun
c)
Air
d)
Uranium
34.
Describe the substance between letters C and D. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
35.
What is happening to the energy of the girl from point A to point B
a)
kinetic changes to potential
b)
potential changes to kinetic
c)
energy is lost
d)
energy is gained
36.
The law of conservation of energy states that when one form of energy is converted into another,
a)
energy is destroyed in the process
b)
no energy is destroyed in the process
c)
energy is created in the process
d)
some amount of energy cannot be accounted for
37.
What kind of heat transfer happens when the sun is heating your body?
a)
Conduction
b)
Radiation
c)
Convection
d)
Density
38.

What force causes a roller coaster cart to slow down the most?

a)

friction

b)

weight

c)

gravity

d)

air resistance

39.

What is the formula for Kinetic Energy?

a)

KE = mass x velocity

b)

KE= 1/2 x mass x velocity 2

c)

KE = mass x gravity x height

d)

KE = mass x velocity / 2

40.
Which 2 letters have the most kinetic energy
a)
W & Y
b)
X & Z
41.
What is the definition of CONDUCTION?
a)
When heat is transferred from objects like rays of light or electromagnetically.
b)
a  hot liquid or air that  expands, becomes less dense, and rises or becomes more dense, and sinks.
c)
When heat transfers from objects that are touching.
d)
When heat transfers through the heater or AC in your house.
42.

Which diagram is the MOST reasonable representation between work input, usable work output, and frictional work done by a typical machine?

a)
b)
c)
d)
43.
The heat from a hot burner to a pot is transferred by ______.
a)
convection
b)
insulation
c)
radiation
d)
conduction
44.

A 6kg cat misjudges a jump and falls 5 meters. How much gravitational potential energy does the cat have? (The cat is fine by the way.)

a)

294 J

b)

180000 J

c)

1225 J

d)

3920000 J

45.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
46.
The way the heat is moving from the hot coffee is called...
a)
convection
b)
radiation
c)
insulation
d)
conduction
47.
You're holding hands with your best friend.  Your friend's hands are REALLY warm and yours are really cold.  After a few minutes, this has changed.  How might you explain what happened?
a)
The cold energy from your hand transferred to your friend's hand through conduction.
b)
The heat energy from your friend's hand transferred to your hand through conduction. 
c)
The cold energy from your hand transferred to your friend's hand through convection.
d)
The heat energy from your friend's hand transferred to your hand through convection.
48.

Where would this tossed baseball have the least amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

49.
a)
1
b)
2
c)
3
d)
4
50.
a)
1
b)
2
c)
3
d)
4
51.

What is the gravitational potential energy (GPE) of a 1 kilogram book that is 1 meter above the ground?

g = 9.8 m/s2

a)

9.8 Joules

b)

1.0 Joule

c)

0.10 Joule

d)

11.8 m/s2

52.
a)
1
b)
2
c)
3
d)
4
53.
a)
A
b)
B
c)
C
d)
D
54.
A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?
a)
3.2 J
b)
4.2 J
c)
2.0 J
d)
12.8 J
55.
A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?
a)
427,500 J
b)
237,500 J
c)
437,500 J
d)
537,500 J
56.
A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building?
a)
43982.4 J
b)
63982.3 J
c)
43962.4 J
d)
83942.4 J
57.

How much gravitational potential energy does a 100kg (220lb.) skydiver have if they jump from 4000 meters?

a)

3920000 J

b)

294 J

c)

180000 J

d)

1225 J

58.
A kid applies a force of 70 N to a ball over 1.1 meters. How much work did he do on the ball? 
a)
77 J
b)
7.7 J 
c)
0.7 J 
d)
770 J 
59.
Which of these is a measure of force?
a)
100 newtons
b)
100 meters per second
c)
100 joules
d)
100 watts
60.

What is the value of the Earth's acceleration due to gravity (g)?

a)

9.8 m/s2

b)

100 m/s2

c)

25 m/s2

d)

3.14 m/s2

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