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Solar System
Test Description: Solar System comparison
Instructions: Answer all questions to get your test result.
1) What force keeps celestial bodies in a regular predictable motion?
A
None of these
B
centripetal force
C
gravity
D
potential energy
2) Describe the effect of gravity on the planets.
A
planets are held in a circular orbit due to gravity
B
planets fly randomly around the milky way galaxy
C
planets triangulate their path around the sun
D
planets stay in their position and do not revolve around the sun
3) Explain gravity
A
gravity holds objects to the surface and keeps planets in orbit
B
gravity makes objects in motion stay in motion
C
gravity is an irrelevant force that has no effect
D
gravity pushes objects away
4) What is responsible for causing ocean tides?
A
The sun's gravitational pull on earth
B
There is no such thing as a tide
C
The moon's gravitational pull on earth
D
Displacement of the solar system relative to the sun
5) Why does Earth's tilted axis cause seasons?
A
Earth's revolution around the sun causes seasons not the tilt
B
It causes changes in day length and changes in the sun's intensity
C
We don't have seasons on earth
D
Because Earth gets closer and further from the sun
6) What causes day and night on Earth?
A
earth's tilt
B
earth's orbital direction
C
earth's rotation
D
earth's revolution
7) What causes the moon phases?
A
The moon's revolution around the earth
B
The moon is like a christmas light and it illuminates differently throughout the month
C
The moon's fast rotation causes changes in luminescence
D
The earth's revolution around the moon
8) What is the sun?
A
an average star
B
a very small star
C
an enormous star
D
a large rock that floats in the solar system
9) Why don't solar and lunar eclipses occur every month?
A
The moon's orbit is tilted
B
The moon's orbit is parallel with earth's
C
Earth orbits around the moon irregularly
D
Because of the shape of the earth
10) Which celestial bodies are most likely to have many craters?
A
gas giants with thin atmospheres
B
gas giants with thick atmospheres
C
terrestrial planets without atmospheres
D
terrestrial planets with thick atmospheres
11) Why are the inner planets called terrestrial planets?
A
they are gas giants and made of thick atmospheres
B
None of these
C
they are very different from earth and made of jello
D
they resemble Earth and are made of rock
12) What causes a high surface temperature on Venus?
A
It has no atmosphere and is close to the sun
B
It is far away from the sun
C
The greenhouse effect of its atmosphere
D
None of these
13) Why is Venus sometimes called Earth's twin?
A
It isn't called earth's twin, Mercury is
B
It is nearly the same size and density
C
None of these
D
It is the only habitable planet besides Earth
*select an answer for all questions
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