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The Solar System
Test Description: Test 7
Instructions: Answer all questions to get your test result.
1) The planet that has nearly the same diameter as Earth is
A
Venus
B
Mercury
C
Jupiter
D
Mars
2) It is difficult for astronomers to study Mercury because
A
it is so close to the sun
B
its atmosphere is so thick
C
it is made mostly of gases
D
it is so large comparred to other planets
3) The high temperatures on Venus' surface is due to
A
liquid waqter on its surface
B
the greenhouse effect
C
high winds
D
the thin atmosphere
4) What are Venus' clouds made of?
A
a mixture of oxygen and nitrogen
B
only carbon dioxide
C
only oxygen
D
mostly droplets of sulfuric acid
5) Which is a correct comparison of daytime and nighttime temperatures on Mercury?
A
Both day and night temperatures are usually above 400 C
B
Daytime temperatures never exceed 200 C, and nighttime temperatures never droop below 100 C
C
Both day and night temperatures are usually below -100 C
D
During the day, temperatures may reach up to 510 C, and during the night, temperatures may reach -210 C
6) What two gases make up most of Earth's atmosphere?
A
oxygen and water vapor
B
oxygen and argon
C
nitrogen and carbon dioxide
D
nitrogen and oxygen
7) What is Jupiter's atmosphere composed of?
A
mainly hydrogen and helium
B
oxygen and carbon dioxide
C
only hydrogen
D
only helium
8) Saturn's rings are made of
A
droplets of liquid helium
B
chunks of ice and rock
C
very dense gases
D
water vapor trapped by Saturn's gravitational field
9) In a geocentric system,
A
only the sun revolves around the Earth
B
Earth revolves around the moon
C
Earth is at the center of the revolving planets
D
the sun is at the center of the revolving planets
10) What is an ellipse?
A
a perfect circle
B
a sphere
C
a cube like shape
D
a slightly flattened circle, or oval shape
*select an answer for all questions
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