Welcome to the Quiz!
This quiz contains 9 questions from a mix of 1 subtopics.
What is the approximate distance of 1 astronomical unit (AU)?
1.5 billion km
150 thousand km
150 million km
150 billion km
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How long does it take for light to travel from the Sun to Earth?
8 hours
8 days
8 minutes
8 seconds
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Which of the following best describes the concept of a light year?
the time it takes for light to travel one year
the time it takes for light to travel from the Sun to Earth
the distance from the Earth to the Sun
the distance light travels in a vacuum in one year
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Which of the following statements about parsecs is true?
a parsec is the distance at which one astronomical unit subtends an angle of one arc second.
a parsec is the distance at which one astronomical unit subtends an angle of one degree.
a parsec is the distance at which one light year subtends an angle of one arc second.
a parsec is the distance at which one light year subtends an angle of one degree.
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What is the term for the apparent movement of closer objects relative to distant ones as the observer's position changes?
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Explain how observing distant stars and galaxies allows us to look back in time.
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Describe the relationship between parsecs and arc seconds in measuring stellar distances.
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Explain why astronomical units (AU) are particularly useful for calculating distances within our solar system.
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If the closest star system to Earth, Alpha Centauri, is just over 1.3 parsecs away, how far is it in light years?
3.26 light years
100,000 light years
4.24 light years
9.5 trillion kilometres
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