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The Earth Moon And Sun Systems
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Summarize why life is possible on the Earth.
A
Earth is larger than Mercury and Mars, but smaller than Jupiter and Saturn.
B
Earth is the only planet with a magnetic field
C
Earth has an atmosphere, liquid water, and a moderate temperature.
D
Earth is just the right size to support both plant and animal life
2) Day and night on Earth are due to:
A
The moon's orbit around the Earth
B
The Earth's rotation
C
the Earth's revolution
D
the Earth's tilted axis
3) What is the central and largest body in the solar system?
A
sun
B
Jupiter
C
moon
D
Earth
4) What force keeps the planets in a regular and predictable motion around the sun?
A
gravity
B
nuclear energy
C
circumference
D
solar energy
5) Which of the following correctly describes the sun?
A
it is a planet which has nuclear reactions that produce energy
B
it is a satellite that revolves around the planets
C
it is a star where nuclear reactions occur
D
it is a planet with a rocky surface
6) How long does it take for the moon to revolve once around the Earth?
A
29.5 days
B
1 day
C
365 days
D
7 days
7) If an astronaut weighs 100 pounds on the Earth, What would he weigh on the moon?
A
0
B
100 pounds
C
200 pounds
D
33 pounds
8) Would life be possible on the moon if there were water and the temperature was right?
A
Life would not be possible because there is not enough sunlight.
B
With water and the correct temperature, life would be possible on the moon.
C
Life would not be possible due to no atmosphere.
D
Life could exist only if there were more gravity on the moon.
9) Auroras, or the northern lights, are caused by....
A
protons and neutrons from solar winds mixing with gases in the Earth's atmosphere
B
the sun
C
solar winds
D
light reflecting off the polar caps
10) Regions of the sun that are cooler than the rest of the photosphere are known as....
A
spicules
B
prominences
C
solar flares
D
sunspots
*select an answer for all questions
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