Unit Test: Astronomy
Flashcard
•
Science
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What prevents stars from collapsing under the force of gravity?
Back
Stars remain stable due to the balance between gravitational force and the outward pressure from nuclear fusion.
2.
FLASHCARD QUESTION
Front
What happens to summer and winter temperatures if Earth's axis tilt increases from 23.5° to 30°?
Back
The summers would become warmer and the winters would become cooler.
3.
FLASHCARD QUESTION
Front
What is the average distance of Comet Barnard from its star?
Back
4.825 AU.
4.
FLASHCARD QUESTION
Front
Does Comet Barnard orbit in the habitable zone for the star Barnard?
Back
Yes, Comet Barnard does orbit within the habitable range.
5.
FLASHCARD QUESTION
Front
What is the average distance of Barnard b from its star?
Back
0.02294 AU.
6.
FLASHCARD QUESTION
Front
Does Barnard b orbit in the habitable zone for the star Barnard?
Back
No, Barnard b does not orbit within the habitable zone.
7.
FLASHCARD QUESTION
Front
What does the Big Bang theory state about the universe's beginning?
Back
The universe began with a rapid expansion.
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