Test Bank, Quizzes: Astro 4, Seeds, - 4e - (2025 update)

Test Bank -
Question 1
How many centimeters are there in one kilometer?
Answer Choices:
A. 100
B. 1,000
C. 10,000
D. 100,000 ★ CORRECT ANSWER ★
E. 1×106
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Question 2
Scientific notation is used in science because
Answer Choices:
A. it makes it easy to write big or small numbers. ★ CORRECT AN-
SWER ★
B. all astronomical distances are expressed in metric units.
C. it makes conversions between units easy.
D. All of the other choices are correct.
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Question 3
The average distance from Earth to the Sun is
Answer Choices:

,A. 1 ly.
B. 1 million km.
C. 1 million miles.
D. 1 billion km.
E. 1 AU. ★ CORRECT ANSWER ★
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Question 4
The Sun is
Answer Choices:
A. a star which generates its own energy.
B. 1 AU from Earth.
C. visible by its own light emission.
D. All of the other choices are correct. ★ CORRECT ANSWER ★
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Question 5
The diameter of a typical star (the Sun) is approximately ____ times larger
than the diameter of a typical planet (the Earth).
Answer Choices:
A. 10
B. 100 ★ CORRECT ANSWER ★
C. 1000
D. 10,000
E. 100,000

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Question 6
A typical galaxy like our Milky Way galaxy contains
Answer Choices:
A. primarily planets.
B. gas only.
C. stars (some with planets), gas, and dust. ★ CORRECT ANSWER ★
D. a single star and planets.
E. thousands of superclusters.
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Question 7
The radius of the Moon's orbit is about ____ times larger than the radius of
Earth.
Answer Choices:
A. 0.6
B. 6
C. 60 ★ CORRECT ANSWER ★
D. 600
E. 6000
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Question 8
Choose the best answer. The Milky Way Galaxy
Answer Choices:

, A. is part of a cluster of a few dozen galaxies. ★ CORRECT ANSWER
★
B. is about 200 light-years in diameter.
C. is the largest known object in the universe.
D. is part of a cluser of a few dozen galaxies, is about 200 ly in diameter, and
is the largest known object in the universe
E. is part of a cluster of a few dozen galaxies and is the largest known object
in the universe
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Question 9
2.9×107 is the same as
Answer Choices:
A. 2.9 thousand.
B. 29 thousand.
C. 290 thousand.
D. 2.9 million.
E. 29 million. ★ CORRECT ANSWER ★
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Question 10
1.65 billion is the same as
Answer Choices:
A. 1.65 × 1012.
B. 1.65 × 109. ★ CORRECT ANSWER ★
C. 1.65 × 106.