AnswersFall 24 GSE Physical Science B ICElectric Charge

Electric Charge — Cumulative exam Answers

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1
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Which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?

A
a 50kg couch
B
a 5kg dining chair
C
a 75kg dining table
D
an 10kg end table
2
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What causes the air above a pot of boiling water to become warm?

A
The air transfers thermal energy to the water vapor.
B
The water vapor transfers thermal energy to the air.
C
The particles in the air lose kinetic energy.
D
The particles in the water vapor gain kinetic energy.
3

If a pitch from a moving vehicle sounds lower to a hearer, where is the vehicle in relation to the hearer?

A
past the hearer
B
before the hearer
C
above the level of the hearer’s ear
D
below the level of the hearer’s ear
4

Two bar magnets are held close together. When they are released, they move toward one another. Which best describes the original placement of the magnets?

A
The magnets are placed end to end with the north pole of each pointing toward the other.
B
The magnets are placed end to end with the south pole of each pointing toward the other.
C
The magnets are placed side by side with the like poles of each magnet near the other.
D
The magnets are placed side by side with the opposite poles of each magnet near the other.
5

Parker wound a wire around a large iron nail. He then created an electromagnet by connecting the ends of the wire to different batteries. The table shows the current he measured for each electromagnet.

Question illustration
A
Electromagnet W is the strongest.
B
Electromagnet X is weaker than electromagnet Z.
C
Electromagnet Y is the strongest.
D
Electromagnet Y is weaker than electromagnet X.
6

What must be true in order for magnetism to induce an electric current in a wire?

A
There needs to be a switch in the circuit.
B
There cannot be a switch in the circuit.
C
The wire must be part of a closed circuit.
D
The wire must be part of an open circuit.
7

What does voltage describe?

A
how fast current can flow
B
how much current can flow
C
how much a material resists electrical flow
D
how fast a material conducts electrical flow
8

Which refers to an object’s resistance to any change in its motion?

A
force
B
acceleration
C
gravity
D
inertia
9

Which waves can travel through space?

A
electromagnetic waves only
B
mechanical waves only
C
electromagnetic and mechanical waves
D
longitudinal and electromagnetic waves
10

Which best describes what happens if two waves meet and build on each other?

A
constructive interference
B
destructive interference
C
reflection
D
absorption
11

Which compares the problems associated with radioactive waste created from generating electricity using fusion reactions to waste created from generating electricity using fission reactions?

A
The radioactive waste from fusion reactions becomes less hazardous much sooner than the waste from fission reactions.
B
The radioactive waste from fission reactions becomes less hazardous much sooner than the waste from fusion reactions.
C
Although their radioactive wastes are hazardous for the same period of time, fusion reactions produce less waste than fission reactions.
D
Although their radioactive wastes are hazardous for the same period of time, fission reactions produce less waste than fusion reactions.
12

Amara draws the ray diagram shown.Which describes Amara’s mistake?

Question illustration
A
She should have drawn a concave lens instead of a convex lens.
B
She should have drawn the image right-side up instead of upside down.
C
Ray 2 should cross through the focal point on the right side of the lens.
D
Ray 3 should point at a downward angle after passing through the lens.
13

Hamish is studying what happens when he sends a sound wave through different mediums, and he records his data in a table.

Question illustration
A
Wave 1 will move the fastest.
B
Wave 2 will move the slowest.
C
Wave 3 will move the slowest.
D
Wave 4 will move the fastest.
14

Selena drew a diagram to show how current moves in a loop of wire that is placed between two magnets.

Question illustration
A
She can change the magnets so like poles are facing each other.
B
She can change the arrows so they show current traveling in opposite directions on the sides of the loop.
C
She can change the arrows so they show the magnetic field reversing direction between the magnets.
D
She can change the magnetic poles so they are both on one side of the loop.
15

Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temperature spoon. Which substance will have heat flow from it to the other substances?

A
the milk
B
the spoon
C
the oatmeal
D
the surrounding air
16

Which color of white light bends the least when it is refracted by a prism?

A
blue
B
yellow
C
green
D
violet
17

The north pole of a bar magnet is moved close to the north pole of a second bar magnet. What prediction best describes how the first magnet responds when it is released?

A
It will move toward the second magnet because like poles repel.
B
It will move toward the second magnet because like poles attract.
C
It will move away from the second magnet because like poles repel.
D
It will move away from the second magnet because like poles attract.
18

How much time is needed for a 15,000 W engine to do 1,800,000 J of work? (Power: P = W/t)

A
0.008 s
B
8 s
C
120 s
D
1,785,000 s
19

The diagram shows two charged objects, A and B.

Question illustration
A
A: positiveB: negative
B
A: negativeB: positive
C
A: negativeB: negative
D
A: positiveB: positive
20

Which is an example of potential energy?

A
a swimmer kicking their legs
B
a car driving on the road
C
an arrow flying at a target
D
a yo-yo in someone’s hand

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