AnswersSY2025-26 - 2002040 MJ Comprehensive Science 1 Sem 1 CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Which two characteristics are shared by all thunderstorms, tornados, and hurricanes?

A
clouds and wind
B
eyes and clouds
C
warm, dry air and wind
D
large waves and warm, dry air
2
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What is the kinetic energy of a toy truck with a mass of 0.75 kg and a velocity of 4 m/s? (Formula: )

Question illustration
A
3 J
B
6 J
C
12 J
D
24 J
3

A person is pushing a box across a table. The measured forces on the box are 10N, 14N, -7N, -10N.Which force is represented by -7N?

A
force of friction
B
normal force
C
force of gravity
D
push force
4

Which effect is most likely from a hurricane?

A
damaged homes due to flooding
B
forest fires due to lightning strikes
C
cars sucked in due to a low-pressure center
D
damaged personal property due to hail
5

Which statement describes friction?

A
It is perpendicular to the surfaces that rub together.
B
It causes a change in motion.
C
It occurs in the same direction as the push force.
D
It pulls downward on a moving object.
6

When does the Northern Hemisphere receive the fewest hours of daylight?

A
during the fall equinox
B
during the winter solstice
C
during the spring equinox
D
during the summer solstice
7

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.
8

Which is one factor that contributes to the formation of polar, temperate, and tropical zones?

A
the angle of the Sun’s rays
B
the direction of seasonal winds
C
the presence of prevailing winds
D
the movement of wind near a mountain
9

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.
10

How is an occluded front different from a cold front?

A
Warm air is pushed up during an occluded front, while cold air moves quickly during a cold front.
B
Occluded fronts cause warm air to feel dry, while cold fronts cause ground temperatures to feel cooler.
C
Warm air moves slowly during an occluded front, while cold air is cut off from the ground in a cold front.
D
Occluded fronts cause rapid changes in weather conditions, while cold fronts cause widespread cloud formation.
11

A weather forecaster describes the condition over Florida as having thunderstorms, rotating winds at 60 miles per hour, and heavy rain. Which natural hazard is happening?

A
a thunderstorm
B
a hurricane
C
a tropical cyclone
D
a flood
12

What is the potential energy of a 25 kg bicycle resting at the top of a hill 3 m high? (Formula: PE = mgh)

A
75 J
B
735 J
C
245 J
D
37.8 J
13

Luz, who is skydiving, is traveling at terminal velocity with her body parallel to the ground. She then changes her body position to feet first toward the ground. What happens to her motion?

A
She will continue to fall at the same terminal velocity because gravity has not changed.
B
She will slow down because the air resistance will increase and be greater than gravity.
C
She will speed up because air resistance will decrease and be less than gravity.
D
She will begin to fall in free fall because she will have no air resistance acting on her.
14

What electromagnetic wave can cause skin cancer?

A
red light
B
yellow light
C
infrared radiation
D
ultraviolet radiation
15

Study these images.Which image shows a cumulonimbus cloud?

Question illustration
A
1
B
2
C
3
D
4
16

The graph indicates Linda’s walk.

Question illustration
A
Linda started out moving, and then stopped moving after 6 seconds.
B
Linda started moving away from the start point, and then moved closer.
C
Linda never moved the entire trip.
D
Linda’s path results in a negative slope.
17

In addition to liquid precipitation, which are present when freezing rain occurs?

A
ice pellets
B
snowflakes
C
cold surfaces
D
warm temperatures
18

Kiley, Jermaine, and Gunther are playing tug-of-war. Kiley and Jermaine are on the same side of the rope, and Gunther is on the other side. Kiley is exerting a force of 20 N, and Jermaine is exerting a force of 25 N.

A
45 N in the opposite direction as Kiley and Jermaine
B
20 N in the opposite direction as Kiley and Jermaine
C
20 N in the same direction as Kiley and Jermaine
D
45 N in the same direction as Kiley and Jermaine
19

A probe is launched from Earth and lands on Mars. The gravitational acceleration on Mars is 3.7 m/s2.

A
The mass of the probe remains the same, but the weight of the probe increases.
B
The mass of the probe remains the same, but the weight of the probe decreases.
C
The mass of the probe increases, but the weight of the probe remains the same.
D
The mass of the probe decreases, but the weight of the probe remains the same.
20

Which term refers to the ability to do work?

A
energy
B
power
C
force
D
motion

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