Chapter 5 Quiz AST1002
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Indian River State College *
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Course
1002
Subject
Astronomy
Date
Dec 6, 2023
Type
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3
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In "De Revolutionibus Orbium Coelestium", this Polish astronomer promoted the heliocentric
model, but used perfect circles instead of ellipses for the orbits of planets.
Copernicus
In the heliocentric model, the eastward motion of the sun through the zodiac is due to
earth revolution
Brainpower
The appearance of this in the constellation Cassiopeia in 1572 suggested change in the heavens.
stella nova (or supernova)
Until Tycho Brahe came along, observations of star and planet positions were
all of the preceeding
Since the 1577 comet showed no parallax, it refuted Aristotle because Aristotle had said that
comets were
exhalations of gas that were in the earth's atmosphere
Tycho proposed that while planets orbit the _____, the _____ orbited ________.
sun; sun; earth
Kepler's first law of planetary motions:
planets orbit the sun in ellipses
A planet is at ____ when it's farthest from the sun in its orbit.
Aphelion
Kepler's 3rd law of planetary motions:
P squared =A cubed
An asteroid takes 8 years to orbit the sun. What is its average distance?
4 AU's.
This English astronomer made telescopic observations and sketches of the moon before Galileo
did.
Thomas Harriot
This discovery provided a demonstration that not everything directly orbited the earth.
the orbiting moons of Jupiter
Which statement concerning Galileo is true?
He was tried, found guilty of breaking his word not to promote the heliocentric theory as fact,
and was put under house arrest, moving from his villa to his city home to the houses of various
ambassadors, etc.
Aristotle was shown to be wrong when Brahe detected ______ in a comet.
Parallax
Kepler used Tycho's data to determine the orbital shape of what?
Mars
What is an AU?
astronomical unit
The average distance between the earth and the sun:
93 million miles
Using a telecope, he was first to see Jupiter's moons, he saw the phases of Venus, the moon's
imperfect features, observed sunspots, and found many more stars.
Galileo Galilei
What did the observation of new stars through a telescope suggest about the universe.
it had depth
The discovery that Venus displayed phases such as crescent, half and gibbous -.
is strong evidence that Venus orbits the sun.
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