AnswersTX-Integrated Physics and Chemistry B-CRUnit Test

Nuclear Fission and Nuclear Fusion Answers

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What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?

A
The moving car transfers kinetic energy to the parked car.
B
Kinetic energy in the moving car disappears.
C
Kinetic energy in the parked car is created.
D
The parked car transfers kinetic energy to the moving car.
2
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The diagram shows a swinging pendulum.

Question illustration
A
The pendulum will slow down and eventually stop moving as the mechanical energy transforms to thermal energy.
B
The pendulum will slow down and eventually stop moving as the mechanical energy disappears.
C
The pendulum will continue moving at the same speed because mechanical energy is created as the pendulum moves.
D
The pendulum will slow down but will not stop moving because some of the mechanical energy is destroyed.
3

Energy can be transformed from one form to another. The diagram shows one such process.

Question illustration
A
nuclear to thermal and radiant
B
nuclear to electrical and chemical
C
chemical to nuclear and radiant
D
chemical to electrical and nuclear
4

Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill.The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.

A
The motionless ball does not have energy because it is still.
B
Kinetic energy is not made; it is a result of energy transformation.
C
The ball cannot slow down unless someone touches it.
D
The energy is not converted; it disappears.
5

Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases. Which best explains Taro’s error?

A
The amount of energy that the ball has does not change.
B
The amount of energy that the club has does not change.
C
The total energy of the system remains the same.
D
The total energy of the system decreases.
6

Which change is an example of transforming potential energy to kinetic energy?

A
changing thermal energy to electrical energy
B
changing mechanical energy to chemical energy
C
changing nuclear energy to radiant energy
D
changing radiant energy to electrical energy
7

Which activity directly converts energy from the Sun into chemical energy?

A
a snake lying on a sunny rock to keep warm
B
a rabbit using energy from food it has eaten to run
C
a bean plant making its own food to grow
D
a person burning firewood to cook food
8

Plants are responsible for a very important energy transformation, as shown.

Question illustration
A
radiant to chemical
B
nuclear to mechanical
C
chemical to thermal
D
mechanical to chemical
9

Savion listed the steps involved when nuclear power plants generate electricity. Nuclear reaction occurs. Nuclear energy is converted to radiant and thermal energy. Heat is used to generate steam. Light and heat are released. Steam turns turbines. Mechanical energy is converted to electrical energy.

A
In step 2, change “radiant and thermal ” to “chemical and mechanical.”
B
Reorder the steps so that step 4 appears before step 3.
C
Reorder the steps so that step 6 appears before step 5.
D
In step 6, change “mechanical” to “thermal.”
10

The image shows a dam.

Question illustration
A
X: kinetic energyY: potential energy
B
X: potential energyY: kinetic energy
C
X: mechanical energyY: electrical energy
D
X: electrical energyY: mechanical energy

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