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Home arrow Chapter 21 arrow Chapter Test

Chapter Test

Read the questions carefully and choose the best answer.

This activity contains 30 questions.

Question 1.
A geocentric model holds that Earth is the center of the universe.

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Question 2.
Aristarchus professed a Sun-centered or ___________ view of the universe.

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Question 3.
Eratosthenes used the angles of the noonday Sun in two Egyptian cities to calculate the size of Earth.

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Question 4.
Probably the greatest of the early Greek astronomers was Tycho Brahe, best known for his star catalog.

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Question 5.
The apparent westward movement of a planet against the background of stars is called


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Question 6.
The early Greeks believed that there were nine wandering heavenly bodies.

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Question 7.
This early civilization recorded the appearance of Halley's comet for at least 10 centuries.

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Question 8.
Who was the ancient Greek who developed a geocentric model of the universe explaining the observable motions of the planets?

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Question 9.
Any variance in the orbit of a body from its predicted path is called precession.

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Question 10.
Copernicus was the first astronomer to use a telescope.

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Question 11.
Gravity is directly proportional to mass.

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Question 12.
The farther away a star is, the greater its parallax will be.

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Question 13.
The shape of a planet's orbit is


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Question 14.
Tycho Brahe is best known for


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Question 15.
Which of the following discoveries is not credited to Galileo Galilei?

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Question 16.
Galileo was burned at the stake during the Inquisition for proving the Copernican theory.

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Question 17.
In his model, Copernicus used circles to represent the orbits of the planets.

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Question 18.
Kepler wrote about planetary motions in his work "The Harmony of the Worlds."

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Question 19.
The apparent shift in the position of a star caused by Earth's motion is called


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Question 20.
The first modern astronomer to propose a Sun-centered solar system was


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Question 21.
88 constellations divide the sky into recognizable units.

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Question 22.
Another name for the star Polaris is


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Question 23.
The right ascension is usually measured in hours.

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Question 24.
The angular distance measured eastward along the celestial equator from the position of the vernal equinox describes the

 
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Question 25.
The most visible stars in a constellation are generally named in order of their ____________ by the letters of the Greek alphabet.

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Question 26.
The apparent path of the Sun against the backdrop of the celestial sphere is called


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Question 27.
A(n) ____________ eclipse occurs when the Moon casts its shadow on Earth.

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Question 28.
A solar eclipse cannot be seen with every new Moon because


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Question 29.
Half of the illuminated disk of the Moon is visible from Earth during the _________ phase of the Moon.

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Question 30.
The cycle of the Moon through its phases as seen from Earth is called the sidereal month.

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