Astronomy HW & EXAM 1 - Homework/Exam 1, PHYS 101Y...

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Homework/Exam 1, PHYS 101Y (Instructor: Igor Shovkovy) Name___________________________________ TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Kepler's third law allows us to find the average distance to a planet from observing its period of rotation on its axis. 1) Answer: True False MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 2) In an annular eclipse 2) A) the Sun appears as a thin, bright ring. B) the Sun is partially blocked by the Earth. C) The Moon is totally blocked by the Earth. D) the Sun is totally blocked by the Moon. E) The Moon appears as a thin, bright ring. Answer: A TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 3) Galileo's observations of the phases of Venus supported Ptolemy's epicycles. 3) Answer: True False 4) According to Newton's first law an object traveling in a circle does not have a force acting on it. 4) Answer: True False MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 5) Kepler's first law worked, where Copernicus' original heliocentric model failed, because Kepler described the orbits as 5) A) much larger than Copernicus had envisioned. B) elliptical, not circular. C) around the Sun, not the earth. D) complex, with epicycles to account for retrograde motions. E) being on equants instead of epicycles. Answer: B 6) If you are in the Moon's umbral shadow, then you will witness 6) A) a total solar eclipse. B) some kind of lunar eclipse. C) a partial solar eclipse. D) a total lunar eclipse. E) nighttime. Answer: A TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 7) Among Galileo's discoveries with his telescope were sunspots. 7) Answer: True False 1
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Homework/Exam 1, PHYS 101Y (Instructor: Igor Shovkovy) Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 8) The conditions needed to produce a solar eclipse are a 8) A) new Moon on ecliptic B) new Moon above the ecliptic C) first or third quarter moon on the ecliptic. D) full Moon on ecliptic E) full Moon on the Celestial Equator Answer: A TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 9) Compared to when it was on the surface, a satellite in an orbit about 4 times the earth's radius will experience about 1/16 the force due to gravity. 9) Answer: True False MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 10) In Ptolemy's geocentric model, the normal eastward motion of the planets was along 10) A) an epicycle. B) the equant.
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This note was uploaded on 04/29/2008 for the course PHYS 101 taught by Professor Shovkovy during the Spring '08 term at Western Illinois University.

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Astronomy HW & EXAM 1 - Homework/Exam 1, PHYS 101Y...

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