PM: Planetary Motion(up through Galileo)

Review Questions

Sept 15, 2010

Question 1

Retrograde motion of planets was first described by?

• (a) Greeks• (b) Romans• (c) Babylonians• (d) Chinese• (e) People who built Stonehenge

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Question 2

It takes Mercury ____ days to go around the sun. From superior conjunction to next superior conjunction is ___ days

• (a) 116, 88• (b) 88, 116• (c) 88, 88• (d) 116, 116• (e) 88, 365.25

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Question 3

An epicycle revolves around a larger circle called _______

• (a) eccentric• (b) hippopede• (c) apex• (d) cycloid• (e) deferent

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Question 4

Which constellation would Jupiter NEVER be found in?

• (a) Taurus• (b) Scorpio• (c) Aquarius• (d) Orion• (e) Leo

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Question 5

Something Galileo did NOT do (discover)• (a) sunspots• (b) Venus has phases• (c) mountains on the moon• (d) Jupiter has moons• (e) invented the first telescope• (e) he did all of these!

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Question 6

Which observation of Galileo is best to argue for the heliocentric system?

• (a) Mountains on Moon• (b) Sunspots show sun rotates• (c) Phases of Venus • (d) Moons of Jupiter• (e) All bodies fall at same rate

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