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