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TEST REVIEW Energy & Work

Total questions: 60

Worksheet time: 1hrs 14mins

Name
Class
Date
1.

___________ is the ability to do work.

a)

Energy

b)

Force

c)

Friction

d)

Motion

2.

What is the potential energy of a 3 kg ball that is on the ground?

a)

0 J

b)

3 J

c)

9.8 J

d)

29.4 J

3.

If a 8 kg cart is sitting still at top of a ramp, what is the kinetic energy of the cart? KE=12m⋅v2KE=\frac{1}{2}m\cdot v^2

a)

0 J

b)

78.4 J

c)

6 J

d)

56.8 J

4.

Water stored in a water tower possesses

a)

Potential energy

b)

Kinetic energy

c)

Solar energy

d)

Electromagnetic energy

5.

Mechanical energy of an object includes

a)

Kinetic energy only

b)

Potential energy only

c)

Kinetic energy and potential energy

d)

None of these

6.

Calculate the KE of a runner that has a mass of 80 kg and is running at a velovity of 8 m/s

a)

5120 J

b)

320 J

c)

640 J

d)

2560 J

7.

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

8.

When you strech a rubber band, you are storing _________ energy.

a)

gravitational potential

b)

elastic potential

c)

kinetic

d)

thermal

9.

Energy cannot be created or destroyed, only converted fron one form to another (Pick 2)

a)

True

b)

False

c)

Law of Conservation of Energy

d)

Law of Conservation of Mass

10.

Which would have the LEAST gravitational potential energy (GPE)?

a)

A ball sitting on the ground

b)

Moon viewed from the Earth

c)

An airplane flying 30,000 feet above the ground

d)

A rock sitting on top of Mt. Everest

11.

At which point does the ball has the greatest gravitational potential energy (GPE)?

a)

A

b)

G

c)

D

d)

C

e)

G

12.

When the PE= 20 J toward the lower part of the diagram, what is the KE?

a)

100 J

b)

80 J

c)

50 J

d)

20 J

13.

Which is not an illistration of kinetic energy?

a)

Expressed in joules

b)

Dependent upon the objects' mass & speed

c)

The energy an object possesses due to its motion

d)

Dependent upon the objects' mass and objects' height

14.

Kinetic energy is the energy an object has due to its

a)

mass

b)

weight

c)

motion

d)

position

15.
Calculate the KE of a moving 4 kilogram object traveling at a velocity of 3 m/s.
a)

18 J

b)

36 J

c)

12 J

d)

6 J

16.

What is the gravitational potential energy of a 26 kg eagle, flying at an altitude of 65 m at a speed of 19 m/s? PE=mgh

(Hint: there is one number you don't need)

a)

32,110 J

b)

1690 J

c)

172.4 J

d)

16,562 J

17.

What is the kinetic energy of a 26 kg eagle, flying at an altitude of 65 m at a speed of 19 m/s? KE=12m⋅v2KE=\frac{1}{2}m\cdot v^2

(Hint: there is one number you don't need)

a)

4693 J

b)

1690 J

c)

172.4 J

d)

16,562 J

18.
In nature, heat always flows from a:
a)
cold object to a warm object.
b)
small object to a big object.
c)
warm object to a cold object.
d)
large object to a small object.
19.
As the kinetic energy of the molecules in a substance increases, the temperature of the substance __________.
a)

increases

b)

decreases

c)

is not changed

20.
Which direction is heat flowing in the picture?
a)
from the hand to the ice
b)
from the ice to the hand
c)
heat is not being transferred
d)
there is no way to tell
21.

Which statement illustrates work done?

a)

A weightlifter holds a barbell above her head

b)

A teacher applies a force to a wall and becomes exhausted

c)

A rolling marble hits a note card and moves it across a table

d)

A student writes a four page essay

22.
The sun shines down on this family as the play on the beach.
a)
conduction
b)
convection
c)
radiation
23.

Hot water rises and cold water sinks. Is this:

a)

Convection

b)

Conduction

c)

Radiation

24.

Stir frying vegetables is an example of

a)

Convection

b)

Conduction

c)

Radiation

25.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
26.
Walking on the warm sand sand with your bare feet.
a)
conduction
b)
convection
c)
radiation
27.
In this experiment, the WARM red dye and the COLD blue dye was placed in the water at the same time. The warm red dye rose to the top while the cold blue dye sank to the bottom.
a)
conduction
b)
convection
c)
radiation
28.
The particles of a gas move ____than the particles of the same substance in the liquid or solid state.
a)
faster
b)
slower
c)
same speed
29.

Heat will always transfer from the ___________ object to the ________ object.

a)

The hottest object to the coolest object.

b)

The coolest object to the hottest object.

c)

The solid object to the liquid object.

d)

The liquid object to the solid object.

30.
When the 2nd story of a house is warmer than the 1st floor of a house is heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal equilibrium
31.
A force exerted over a distance to move an object is ______________________.
a)
power
b)
work
c)
momentum
d)
Watt
32.

A 25N block is lifted 10 m. How much work was done?

a)

50000 J

b)

2.5 J

c)

500 J

d)

250 J

33.

Two factors that determine work are...

a)

Force

b)

Mass

c)

Velocity

d)

Distance

34.

Match the Units:

a)
Newtons
1.

Force

b)

Watts

2.

Power

c)
Joules
3.

Energy, Work

d)
Meters
4.

Distance

35.

Fred kicks a ball to George and does 20J of work on it. How much force was used if he kicks it 4 m?

a)

80 N

b)

5 N

c)

4 N

d)

80 J

36.

Find the distance an object traveled if a force of 350 N acted on it to produce 0 work?

a)

3 m

b)

2 m

c)

0 m

37.

If you use 30 J of energy to move an object, you have done ____ J of work.

a)

3

b)

10

c)

30

d)

0

38.

If you lift a box that is twice as heavy as your friend you are doing

a)

the same amount of work.

b)

two times more work than your friend.

c)

half as much work as your friend.

d)

Cannot be determined.

39.

If you run up the stairs slower you will

a)

do more work.

b)

do less work.

c)

generate more power.

d)

generate less power.

40.
What is the power of a kitchen blender if it can perform 3,750 joules of work in 15 seconds?
a)

56, 250 watts

b)

250 watts

c)

275 watts

41.

How much work is done using a 500 watt microwave oven for 5 minutes?

[Note: time needs to be in "seconds". How many seconds are in 5 minutes?]

a)

150,000 J

b)

2500 J

c)

100 J

d)

16.7 J

42.

What is the GPE at point A

a)

14 J

b)

12 J

c)

6 J

d)

8 J

43.

What is the KE at point B?

a)

14 J

b)

12 J

c)

6 J

d)

8 J

44.

What is the GPE at the top?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

45.

What is the KE half way down?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

46.

What form of energy is used to make this toaster work?

a)

Nuclear energy

b)

Radiant Energy

c)

Kinetic Energy

d)

Electric Energy

47.

What are the energy transformations that occur with the toaster oven?

a)

Radiant - heat - light

b)

Sound - thermal - heat

c)

Chemical - light- heat

d)

Electrical - thermal

48.

Energy cannot be created nor destroyed. Just _________

a)

heat

b)

transferred

c)

do it

d)

manifested

49.

if there was "X" amount of energy created in our Universe during the Big Bang almost 15 billion years ago, how much is there in todays universe?

a)

less than "X"

b)

more than "X"

c)

"X"

d)

"Y"

50.

The two main categories for energy are:

a)

Mechanical & Chemical

b)

Potential & Kinetic

c)

Kinetic & Mechanical

d)

Potential & Chemical

51.

A skydiver jumps out of a helicopter. What is happening in terms of energy?

a)

He is gaining potential energy as he falls, and losing kinetic energy.

b)

He is gaining kinetic energy as he falls and losing potential energy.

c)

His kinetic and potential energy is always the same.

d)

He is gaining kinetic and potential energy at the same time.

52.
Potential energy that depends on height or position from surface of the Earth is
a)
Gravitational potential energy 
b)
Chemical potential energy 
c)
Elastic potential energy 
d)
Magnetic potential energy 
53.
Which is the following IS NOT an example of energy stored as elastic potential energy? 
a)
A stretched rubberband
b)
a bouncing tennis ball
c)
a loose spring
d)
an arrow pulled back in a bow
54.
Energy stored in objects made from materials that stretch or compress is 
a)
Gravitational potential energy 
b)
Chemical potential energy 
c)
Elastic potential energy 
d)
Elastic kinetic energy 
55.
The picture above shows an aluminum box being pushed into a loading spring. Which of the pictures contains the most elastic potential energy? 
a)
Picture 1
b)
Picture 2
c)
Picture 3
d)
Picture 4
56.
The kid ate some spaghetti and then started playing with his toys. What is the energy transformation that is taking place?
a)
thermal converted to kinetic
b)
electrical converted to thermal
c)
kinetic converted to chemical
d)
chemical to mechanical
57.
When you strike a match and light some logs on fire, what is the energy transformation that is taking place?
a)
heat to kinetic to potiential
b)
kinetic to thermal to light
c)
chemical to light to thermal
d)
light to chemical to thermal
58.
Thermal energy always moves:
a)
From a high temperature object to a lower temperature object.
b)
From a lower temperature object to a higher temperature object.
c)
From an object with lower kinetic energy to an object with higher kinetic energy.
d)
From an object of higher mass to an object of lower mass.
59.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
60.

Match the following forms of energy

a)
1.

Thermal

b)
2.

Nuclear

c)
3.

Chemical

d)
4.

Electromagnetic

e)
5.

Electrical

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