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