What are the main constituents of the jovian planets?
A) rocky minerals and water,as on Earth
B) hydrogen and helium
C) ammonia and methane
D) ammonia and water
E) nitrogen and methane
Correct Answer:
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Q6: Which of the following observations indicates that
Q7: What is the primary reason why a
Q8: How does the Sun's mass compare with
Q9: The most metal-rich terrestrial planet is
A)Mercury.
B)Venus.
C)Earth.
D)the Moon.
E)Mars.
Q10: What is aerobraking?
A)the technique of using a
Q12: Which planet has a ring system?
A)Jupiter
B)Saturn
C)Uranus
D)Neptune
E)all of
Q13: The planet closest in size to Earth
Q14: Which of the following is not an
Q15: Which of the following is not a
Q16: Where does nuclear fusion occur in the
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