2B: Astronomy Fall Final (2024)
Flashcard
•
Science
•
12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a Main Sequence Star?
Back
A Main Sequence Star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core. Examples include our Sun.
2.
FLASHCARD QUESTION
Front
Which planet in our solar system has two small moons?
Back
Mars has two small moons named Phobos and Deimos.
3.
FLASHCARD QUESTION
Front
What planet did the ancient Maya use for time-keeping and navigation?
Back
The ancient Maya used Venus for time-keeping and navigation.
4.
FLASHCARD QUESTION
Front
What is a galaxy?
Back
A galaxy is a collection of stars, dust, and gas bound together by gravity.
5.
FLASHCARD QUESTION
Front
In which direction does Polaris point on Earth?
Back
Polaris always points in the North direction on Earth.
6.
FLASHCARD QUESTION
Front
What is the difference between inner and outer planets?
Back
Inner planets are rocky and closer to the Sun (Mercury, Venus, Earth, Mars), while outer planets are gas giants and farther from the Sun (Jupiter, Saturn, Uranus, Neptune).
7.
FLASHCARD QUESTION
Front
What is the significance of the Hertzsprung-Russell diagram?
Back
The Hertzsprung-Russell diagram is a scatter plot of stars showing the relationship between their absolute magnitudes and stellar classifications, helping to understand stellar evolution.
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