Questions for Review


1		What is the celestial sphere?



2		What is a constellation?



3		What is the zodiac?



4		What is the ecliptic?



5		What causes the seasons?



6		When it is winter in Australia, what season is it in New York? Is it April in Paris?



7		Where on the celestial sphere would you look for the planets?



8		How long does it take the Moon to go through a cycle of phases?



9		Sketch the path on the sky that a planet makes when undergoing retrograde motion.



10		Will a planet in retrograde motion rise in the east or west?



11		If you see a bright "star" in the sky, how could you tell whether it is a star and not, for example, Venus?



12		Describe the major astronomical contribution(s) of the following in a sentence or two for each: Aristotle, Aristarchus, Eratosthenes, Ptolemy, Copernicus, Tycho, Kepler, Galileo, and Newton.



13		What is meant by the phrase angular diameter?



14		If you triple your distance from an object, what happens to its angular size?

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