AnswersTX-Integrated Physics and Chemistry BCumulative Exam

Cumulative Exam — Cumulative exam Answers

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21
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Which best explains why a black T-shirt gets warmer in the Sun than a white T-shirt?

A
Darker colors reflect more energy from colliding particles than lighter colors do.
B
Darker colors absorb more energy from colliding particles than lighter colors do.
C
Darker colors reflect more energy from electromagnetic waves than lighter colors do.
D
Darker colors absorb more energy from electromagnetic waves than lighter colors do.
22
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Which is most likely a source of air pollution?

A
littering
B
CFCs
C
oil spill
D
runoff
23

Which statement best explains why electricity should be conserved?

A
Fossil fuels generate electricity and are limited in supply.
B
Fossil fuels generate electricity and are expensive.
C
Power plants use a lot of resources and never produce a lot of electricity.
D
Power plants can use only one type of resource to produce electricity.
24

A flashlight has a resistance of 2.4 . What voltage is applied by the batteries if the current in the circuit is 2.5 A?

Question illustration
A
0.96 V
B
1.0 V
C
4.9 V
D
6.0 V
25

Which is one characteristic shared by electromagnetic and mechanical waves?

A
Both have a frequency and amplitude.
B
Both move due to particles bumping into each other.
C
Both are formed by charged particles.
D
Both occur as a result of a disturbance.
26

Nolan set up the equipment shown in order to induce a current in a wire.

Question illustration
A
The wire needs to be coiled less tightly.
B
The wire needs to be straight, not coiled.
C
The magnet needs to be moved through the coils of wire.
D
The magnet needs to be held above the coils of wire.
27

Which types of electromagnetic waves have frequencies that are higher than those of ultraviolet light but lower than those of gamma rays?

A
microwaves
B
X-rays
C
infrared light
D
radio waves
28

A circuit contains two light bulbs connected in parallel. What would happen to the brightness of each light bulb if two more light bulbs were added in parallel to the first ones?

A
The brightness of each bulb would decrease because the total resistance of the circuit would decrease.
B
The brightness of each bulb would increase because the total resistance of the circuit would increase.
C
The brightness of each bulb would remain the same even though the total resistance of the circuit would decrease.
D
The brightness of each bulb would remain the same even though the total resistance of the circuit would increase.
29

The field lines around one end of a bar magnet are shown below.

Question illustration
A
It is a south pole because the field lines spread out from this end.
B
It is a north pole because the field lines spread out from this end.
C
It is a south pole because the field lines enter the magnet at this end.
D
It is a north pole because the field lines enter the magnet at this end.
30

A scientist measured an increase in nitrous oxide in the atmosphere. This increase would result in

A
an increase in the greenhouse effect.
B
a decrease in the greenhouse effect.
C
no change in the greenhouse effect.
D
a stabilization of the greenhouse effect.
31

Which is most likely to get hot fastest when touching a warm surface?

A
foam cup
B
wooden spoon
C
copper wire
D
plastic button
32

Which wave is carrying the most energy?

A
A wave with large amplitude.
Option A
B
A wave with very large amplitude.
Option B
C
A wave with small amplitude.
Option C
D
A wave with medium amplitude.
Option D
33

Which object reflects light with the longest wavelength?

A
a yellow book
B
a violet flower
C
a blue paper
D
a green leaf
34

Farah is doing an experiment that involves calculating the speed of a longitudinal wave. What will most likely happen if she increases the temperature in the room?

A
The amplitude of the wave will increase.
B
The amplitude of the wave will decrease.
C
The speed of the wave will increase.
D
The speed of the wave will decrease.
35

Which would increase the speed of a sound wave?

A
A wave passes from a solid to a liquid while remaining the same temperature.
B
The medium increases in temperature while remaining in the same phase.
C
The medium decreases in temperature while remaining in the same phase.
D
A wave passes from a liquid to a gas while remaining the same temperature.
36

Which best explains why Greg’s hands get warm as he holds a bowl of hot soup?

A
Heat energy is created from the thermal energy in Greg’s hands.
B
Heat energy is absorbed by the soup from Greg’s hands.
C
Thermal energy from the soup moves to Greg’s hands.
D
Thermal energy from the surrounding air moves to Greg’s hands.
37

Which best describes what is required for any sound wave to travel?

A
empty space
B
any medium
C
solid
D
liquid
38

Lisa made the electromagnet shown.

Question illustration
A
She can use a nail with weaker magnetic properties.
B
She can change the direction of the nail.
C
She can increase the number of wire loops.
D
She can reduce the current in the wire.
39

Which type of electromagnetic waves make up the colors of a rainbow seen after a storm?

A
visible light
B
infrared light
C
X-rays
D
ultraviolet light
40

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?

A
Brody is correct because the wave involves an input of energy.
B
Ethel is correct because energy is not carried from one place to another.
C
Brody is correct because the pattern repeats.
D
Ethel is correct because the motion has no pattern.

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