How far is a light year?
A) Nearly 10 trillion km
B) The distance of one Earth orbit.
C) 300,000 km
D) All of the above
Correct Answer:
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Q1: Polaris is always directly overhead at
A)the north
Q4: Summer and winter constellations are different because
A)of
Q8: We do not see stars in the
Q12: The star nearest the Earth is
A)the Sun.
B)Alpha
Q13: Which best describes the intrinsic motion of
Q17: The background stars during a solar eclipse
Q17: What is the reference that astronomers use
Q24: Luminosity is
A)the total amount of light energy
Q28: A star's color tells us
A)how much energy
Q34: A star's luminosity tells us
A)how much energy
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