AnswersFall 24 GSE Physical Science B ICElectric Charge

Electric Charge — Cumulative exam Answers

3 verified answers
21
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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.
22
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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
23

How does a machine, such as a ramp, help make work easier?

A
A machine can help decrease the input force and the output force.
B
A machine can help increase the input force and the output force.
C
A machine can help increase the input force and decrease the output force.
D
A machine can help decrease the input force and increase the output force.
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

Briana builds a circuit that has a resistance of 8.0 . What voltage should she apply to have a current of 0.8 A?

Question illustration
A
0.10 V
B
6.4 V
C
7.2 V
D
10 V
26

A magnet placed against the wall of a metal shed falls to the ground, where it attracts a nail. What is the most likely explanation for this observation?

A
The wall is the opposite pole from the magnet.
B
The shed is not made of iron or steel.
C
The magnet is not magnetized.
D
The nail pulled the magnet to the ground.
27

The diagram shows a clear glass lens.Which best describes what happens when light rays move from air, through the lens, and back to air?

Question illustration
A
The light rays refract toward a central axis.
B
The light rays spread apart as they exit the lens.
C
The light rays converge toward a single point.
D
The light rays diverge before entering the lens.
28

Which object reflects light with the longest wavelength?

A
a yellow book
B
a violet flower
C
a blue paper
D
a green leaf
29

Brian creates the diagram below to organize his notes on nuclear fission and fusion.

Question illustration
A
produces neutrons
B
forms heavier atoms
C
joins two nuclei
D
forms lighter nuclei
30

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.
31

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.
32

An object is placed in front of a convex mirror. The reflected image of the object will be a

A
real image that appears to be behind the mirror.
B
real image that appears to be in front of the mirror.
C
virtual image that appears to be behind the mirror.
D
virtual image that appears to be in front of the mirror.
33

Rosa writes a story in which the main character turns into a mouse.

A
an ironed bedsheet
B
a polished spoon
C
a flat sheet of paper
D
a painted cabinet door
34

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.
35

Which of these actions would decrease heat transfer between two objects?

A
increasing the temperature of the warmer object
B
increasing the area of their contact
C
reducing the thermal energy of the cooler object
D
reducing the time of their contact
36

Bill does 1500 J of work on a lever, which is a simple machine. The lever does 1350 J of work on a stone.What is the efficiency of the lever?

A
0.9%
B
1.1%
C
90%
D
111%
37

Which best describes a difference between electric current and static electricity?

A
Electric current is continuous, and static electricity is not continuous.
B
Static electricity is continuous, and electric current is not continuous.
C
Electric current involves the movement of electrons, and static electricity involves the movement of protons.
D
Static electricity involves the movement of electrons, and electric current involves the movement of protons.
38

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
39

An object is moving north at a constant speed. A force of 5 N begins to push the object east at the same moment that a force of 5 N begins to push it west. What will happen to the object?

A
The object will turn toward the west.
B
The object will slow down and stop.
C
The object will accelerate toward the east.
D
The object will continue moving north.
40

Based on the concept of the global conveyor belt, what happens to ocean water as it moves from Antarctica to the equator?

A
It transfers thermal energy to deeper layers of the ocean.
B
It becomes less dense and rises to the surface.
C
It transfers thermal energy to the area, warming the equatorial waters.
D
It becomes more dense and sinks to the ocean bottom.

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