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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.
7

What is the potential energy of a 25 kilograms bicycle resting at the top of a hill 3 m high? (Formula: cap p cap e is equal to mg h )

A
735 cap j
B
75 cap j
C
37 point 8 cap j
D
245 cap j
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.
11

Which term refers to the ability to do work?

A
power
B
force
C
motion
D
energy
12

Pravat exerts a force of 30 cap n to lift a bag of groceries 0 point 5 m How much work did Pravat do on the bag? Note : Work is equal to Force times Distance

A
30 cap j
B
0 cap j
C
15 cap j
D
60 cap j
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.
15

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

A
X-rays
B
radio waves
C
infrared light
D
microwaves
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
18

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

A
any medium
B
liquid
C
solid
D
empty space
20

Briana builds a circuit that has a resistance of 8 point 0 cap omega What voltage should she apply to have a current of 0 point 8 cap A ?

A
7 point 2 V
B
10 V
C
6 point 4 V
D
0 point 1 0 V
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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