N/A — Exam Answers

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1
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Which statement about the circuits is correct?

A
The total resistance in Circuit A is greater than that in Circuit B.
B
The bulbs in Circuit A shine brighter than those in Circuit B.
C
When a bulb in Circuit A goes out, the other bulbs keep shining.
D
When a bulb in Circuit B goes out, the other bulbs go out.
2
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Marcus plucks at an outstretched coil and observes the wave motion. What is the motion of the particles in this kind of wave?

A
The particles will move up and down over large areas.
B
The particles will move side to side over small areas.
C
The particles will move up and down over small areas.
D
The particles will move side to side over large areas.
3

What can be predicted about the waves if they were to crash into each other?

A
The crest of Wave A would overlap the trough of Wave B.
B
Interference would occur.
C
The resulting wave would travel at 4 point 2 hertz.
D
Refraction would occur.
4

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

A
It becomes more dense and sinks to the ocean bottom.
B
It becomes less dense and rises to the surface.
C
It transfers thermal energy to deeper layers of the ocean.
D
It transfers thermal energy to the area, warming the equatorial waters.
5

Which is the most accurate description of how the coolant works in an engine?

A
Combustion absorbs chemical energy.
B
Combustion absorbs thermal energy.
C
Coolant absorbs chemical energy.
D
Coolant absorbs thermal energy.
6

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 speed of the wave will decrease.
B
The amplitude of the wave will decrease.
C
The speed of the wave will increase.
D
The amplitude of the wave will increase.
8

Hamid is viewing an image of a bird produced by a set of concave lenses. What must be true about the image?

A
It is upside down.
B
It is a virtual image.
C
It is larger than the actual bird.
D
It is capable of being projected.
9

Which is one characteristic shared by electromagnetic and mechanical waves?

A
Both occur as a result of a disturbance.
B
Both have a frequency and amplitude.
C
Both move due to particles bumping into each other.
D
Both are formed by charged particles.
10

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

A
Static electricity is continuous, and electric current is not continuous.
B
Electric current involves the movement of electrons, and static electricity involves the movement of protons.
C
Static electricity involves the movement of electrons, and electric current involves the movement of protons.
D
Electric current is continuous, and static electricity is not continuous.
13

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 decrease the output force.
C
A machine can help decrease the input force and increase the output force.
D
A machine can help increase the input force and the output force.
14

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

A
Thermal energy from the soup moves to Greg’s hands.
B
Heat energy is created from the thermal energy in Greg’s hands.
C
Heat energy is absorbed by the soup from Greg’s hands.
D
Thermal energy from the surrounding air moves to Greg’s hands.
16

The thermal energy in a hot iron flows into a shirt. What can possibly be said about this situation?

A
The iron is warmer than the shirt.
B
The iron has less energy than the shirt.
C
The iron has less heat than the shirt.
D
The iron is 92 times degree C and the shirt is 96 times degree C .
17

What do MRI and ultrasound have in common as diagnostic imaging techniques? Choose three correct answers.

A
uses radio waves
B
tomographic imaging
C
low risk for tissue damage
D
no radiation
E
noninvasive
21

Two objects are held close together. When they are released, they move toward one another. Which conclusion is supported by this evidence?

A
The objects have no charge.
B
The objects have opposite charges.
C
The objects are both negatively charged.
D
The objects are both positively charged.

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