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AST 111 - Test 1 Study Guide Questions and Answers with Verified Solutions
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AST 111 - Test 1 Study Guide Questions and Answers with Verified Solutions
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AST 111 - Test 1 Study Guide Questionsand Answers with Verified Solutions
The Milky Way resides in the Local Group of galaxies. - ANSWER True
The two nearest planets to the Earth are ... - ANSWER Venus and Mars
A solar eclipse can only occur when the Moon is in the ______ phase. -
ANSWER New
How old is the Sun? - ANSWER Near 5 billion yr
Why is it warmer in summer for Northern Hemisphere residents than in winter? -
ANSWER Earth's rotation axis is tilted orienting the Northern Hemisphere
toward the Sun, and thus the Sun heats the ground more directly and for a longer
time.
Declination on the celestial sphere is similar to this coordinate which describes a
location on Earth: - ANSWER latitude
The constellations ... - ANSWER are 88 in number and cover the entire sky.
0.0000003 in scientific notation is ________. - ANSWER 3×10 -7
, A science fiction writer describes inhabitants on Earth in 4000 AD traveling north
using Polaris. What is wrong with this scenario? - ANSWER Polaris will no
longer be close to due north, because of Earth's precession (i.e., Earth undergoes
a motion like a spinning top).
Students are given 3 attempts for these learning module quizzes (highest grade is
registered). - ANSWER True
Importantly, Tycho Brahe ... - ANSWER made accurate measurements of
planetary positions, which Kepler later used to help conclude that orbits are
elliptical.
Importantly, Johannes Kepler ... - ANSWER discovered that planetary orbits are
ellipses rather than circles.
The Julian and Gregorian calendars did not possess a leap year. - ANSWER False
The constellation that hosts the North Star (Polaris) is designated ... - ANSWER
Ursa Minor, the little bear and dipper.
What does "epicycle" refer to in Ptolemy's geocentric model? - ANSWER It is
the smaller circle that a planet orbits, and the center of that circle orbits around
Earth (deferent).
The early Copernican system for planetary motions is ... - ANSWER Sun-
centered (heliocentric), with planets moving in circular orbits.
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