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18-19 Energy Unit Review

Total questions: 42

Worksheet time: 1hrs 3mins

Name
Class
Date
1.
Large amounts of energy are released when the nuclei of atoms join together in a process called _____________________
a)
area of motion
b)
mass
c)
nuclear fusion
d)
the environment
2.
The food you eat provides your body with ______________energy.
a)
nuclear 
b)
chemical
c)
heat 
d)
radiant
3.
Energy is the ability to cause_____________ and influences almost everything in life.
a)
opportunity
b)
change
c)
options
d)
noise
4.
An object that has a greater mass and __________has a greater kinetic energy than an object that has less of each.
a)
mass
b)
motion
c)
speed
d)
heat
5.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
6.
Which energy transformation occurs in a toaster?
a)
chemical to electric
b)
electric to thermal
c)
kinetic to chemical
d)
thermal to potential
7.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
8.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
9.
"Energy can be transformed from one form into another or transformed from one region or another, but energy cannot be created or destroyed."
Which law is this?
a)
Law of Conservation of Mass
b)
Newton's Second Law
c)
Law of Conservation of Energy
d)
Newton's Third Law
10.
Which of these is not a source of chemical energy?
a)
Spaghetti
b)
The Sun
c)
Battery
d)
Petroleum
11.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
12.
Which skier will have a greater potential energy? 
a)
Skier 1
b)
Skier 2
13.

The unit for energy

a)

Joules

b)

watts

c)

Newtons

d)

seconds

e)

meters

14.
The Law of Conservation of Energy states that...
a)
energy can be destroyed
b)
energy can not be created or destroyed
c)
energy can only be destroyed using the force
15.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
16.
A group of friends gather around a fire to stay warm.
a)
conduction
b)
convection
c)
radiation
17.
The Gulf Stream is a current that brings warm ocean water from the south to the north.
a)
conduction
b)
convection
c)
radiation
18.
Blow drying your wet hair.
a)
conduction
b)
convection
c)
radiation
19.

The man goes to take the hot pot off the stove with his bare hands.

a)

conduction

b)

convection

c)

radiation

20.
Warm air rises and the cool air sinks.
a)
conduction
b)
convection
c)
radiation
21.

The baby chickens are kept warm by the heat lamps.

a)

conduction

b)

convection

c)

radiation

22.

In some cultures, walking in direct contact with blazing hot coals (firewalking) is the ultimate sign of strength. This form of heat transfer is an example of...

a)

conduction

b)

convection

c)

radiation

23.
The chocolate bunny and the iron.
a)
conduction
b)
convection
c)
radiation
24.
The chocolate bunny and the blow dryer.
a)
conduction
b)
convection
c)
radiation
25.
The chocolate bunny and the lamp.
a)
conduction
b)
convection
c)
radiation
26.
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.
27.
This is a lava lamp. When the light bulb heats the wax, the wax rises. When the wax cools, it falls. This cycle of rising/falling is an example of:
a)
Conduction.
b)
Convection.
c)
Radiation.
28.
Warm air is __________ dense than cold air and rises creating convection currents.
a)
more
b)
less
29.
The candle will slowly heat the metal and transfer the heat directly to the mans hand.
a)
conduction
b)
convection
c)
radiation
30.

The purpose of solar photovoltaic panels is to transform radiant energy into ____________.

a)

nuclear energy

b)

electrical energy

c)

chemical energy

d)

mechanical energy

31.

The fries are kept warm by the infrared lamps

a)

conduction

b)

convection

c)

radiation

32.

Travels through space to warm your face

a)

conduction

b)

convection

c)

radiation

33.

Warm rises, cool descends

a)

conduction

b)

convection

c)

radiation

34.

Which of the following describes an energy transformation from potential chemical to electrical to radiant energy?

a)

A bolt of lightning lights the night sky.

b)

A candle glows brightly in the dark.

c)

A fire in a fireplace lights up a room.

d)

A battery causes a flashlight to shine.

35.

You're holding a bowling ball which has a mass of 10 kilograms, 5 meters above the ground. You're on the planet Earth, which has a gravity of about 10 m/s/s. How much potential energy does the ball have? (PE=mgh)

a)

25 joules

b)

2,500 joules

c)

5,000 joules

d)

500 joules

36.

Where on the path of the swing does the kid have the maximum potential energy?

a)

X

b)

Y

c)

Z

37.

Where on the path of the swing does the kid have the maximum kinetic energy?

a)

X

b)

Y

c)

Z

38.

What is the definition of CONVECTION

a)

When heat transfers through waves.

b)

When heat transfers from objects that are touching.

c)

a hot fluid expands, becomes less dense, rises up, cools off, becomes more dense, and sinks.

d)

Heat traveling from the sun

39.

How will heat move between these cubes?

a)

From A to B

b)

From B to A

40.

How will heat move between these cubes?

a)

From A to B

b)

From B to A

41.

How will heat move between these cubes?

a)

From A to B

b)

From B to A

42.

For heat to move as shown, what MUST be true?

a)

Cube A has more thermal energy than Cube B

b)

Cube B has more thermal energy than Cube A

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