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1
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Which label best completes the diagram?

A
Strong nuclear force
B
Weak nuclear force
C
Electromagnetic force
D
Gravitational force
2
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Which labels correctly identify the layers most closely associated with gamma rays and visible light?

A
Z: Gamma rays Y: Visible light
B
Y: Gamma rays Z: Visible light
C
Z: Gamma rays X: Visible light
D
X: Gamma rays Z: Visible light
3

Which best describes how the image of the vase will appear?

A
It will be larger than the vase and upright.
B
It will be smaller than the vase and inverted.
C
It will be smaller than the vase and upright.
D
It will be larger than the vase and inverted.
4

Which best completes the chart?

A
Space is three-dimensional.
B
The speed of light is absolute.
C
Space is four-dimensional.
D
The speed of light varies.
5

Based on the field lines, what is the best description of the charges?

A
The left is positive and the right is negative, so they attract.
B
The left is negative and the right is positive, so they attract.
C
They are positive, and they repel.
D
They are negative, and they repel.
6

Which best explains the arrow’s purpose in the diagram?

A
It is showing the direction that electrons move in, making the sphere positive.
B
It is showing the direction that protons move in, making the sphere positive.
C
It is showing the direction that electrons move in, making the sphere negative.
D
It is showing the direction that protons move in, making the sphere negative.
7

Which statement describes what the hand shows?

A
When the current flows up the wire, the magnetic field flows out on the left side of the wire and in on the right side of the wire.
B
When the current flows down the wire, the magnetic field flows in on the left side of the wire and out on the right side of the wire.
C
When the current flows down the wire, the magnetic field flows out on the left side of the wire and in on the right side of the wire.
D
When the current flows up the wire, the magnetic field flows in on the left side of the wire and out on the right side of the wire.
8

How does the circuit change when the wire is added?

A
A closed circuit occurs and makes all bulbs turn off.
B
A short circuit occurs and makes bulbs 3 and 4 turn off but keeps bulbs 1 and 2 lit.
C
A short circuit occurs and makes bulbs 1 and 2 turn off but keeps bulbs 3 and 4 lit.
D
An open circuit occurs and makes all bulbs turn off.
9

Which two order bands are the dimmest?

A
n is equal to 1 and n is equal to 2
B
n is equal to 0 and n is equal to 3
C
n is equal to 2 and n is equal to 3
D
n is equal to 0 and n is equal to 1
10

Which best explains why infrared waves are ineffective for treating cancer?

A
They have long wavelengths, which can be harmful to healthy cells.
B
They do not transfer enough energy to destroy cancer cells.
C
They have short wavelengths, which can be harmful to healthy cells.
D
They have frequencies that are too high to kill cancer cells.
11

What is the main difference between a permanent magnet and a temporary magnet?

A
A permanent magnet is made of a ferromagnetic material, while a temporary magnet is not.
B
A temporary magnet attracts only metal objects, while permanent magnets attract both metal objects and other magnets.
C
There are domains in a permanent magnet, but not in a temporary magnet.
D
The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment.
12

Once started, why can nuclear fission continue to occur on its own?

A
The thermal energy released can cause the products to join.
B
The thermal energy released can cause the products to split.
C
The neutron formed by the reaction can cause more nuclei to combine.
D
A neutron begins the reaction, and more neutrons are formed in it.
13

A negative 0 point 0 6 cap c charge is placed is in a uniform electric field with a strength of 200 cap n over cap c What is the magnitude and direction of the force on the charge?

A
12 cap n in the opposite direction of the field
B
3333 cap n up in the opposite direction of the field
C
12 cap n in the same direction of the field
D
3333 cap n in the same direction of the field
14

Takumi works in his yard for 45 minutes each Saturday. He works in the morning, and he wears sunscreen and a hat each time he works in the yard. What does Takumi hope to reduce through his actions?

A
the likelihood of non-stochastic effects, such as radiation sickness
B
the likelihood of stochastic effects, such as DNA mutations
C
the severity of non-stochastic effects, such as cancer
D
the severity of stochastic effects, such as cancer
15

Karen is running forward at a speed of 9 meters per second She tosses her sweaty headband backward at a speed of 20 meters per second

Answer:

-11

16

Which describes Einstein’s second postulate about the special theory of relativity?

A
The speed of light in a vacuum fluctuates, and some things are faster than the speed of light.
B
The speed of light in a vacuum is constant, and some things are faster than the speed of light.
C
The speed of light in a vacuum is constant, and nothing is faster than the speed of light.
D
The speed of light in a vacuum fluctuates, but nothing is faster than the speed of light.
17

A 6 centimeters object is 15 centimeters from a convex lens that has a focal length of 5 centimeters What is the distance of the image from the lens, to the nearest hundredth?

A
negative 33 point 3 3 centimeters
B
33 point 3 3 centimeters
C
7 point 5 0 centimeters
D
negative 7 point 5 0 centimeters
18

Aluminum has a frequency threshold of 9 point 8 4 6 times 10 to the 14th power Hz Which best explains what will happen when light with a frequency below the frequency threshold strikes aluminum?

A
No electrons will be ejected unless the intensity is very high.
B
Electrons will start being ejected several seconds after the light strikes the aluminum.
C
No electrons will be ejected.
D
Electrons will be ejected immediately.
19

The distance between a charge and the source of an electric field changes from 3 millimeters to 6 millimeters

Answer:

multiplied by 2

20

Which force is sometimes attractive and has an infinite range?

A
gravitational
B
strong nuclear
C
weak nuclear
D
electromagnetic

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