

Foundations of Astronomy Vocab
Flashcard
•
Science
•
11th Grade
•
Practice Problem
•
Hard
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30 questions
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1.
FLASHCARD QUESTION
Front
Includes all of space, matter, and energy.
Back
Universe
2.
FLASHCARD QUESTION
Front
A gravitationally bound system of a central star and its orbiting objects.
Back
Solar System
3.
FLASHCARD QUESTION
Front
A celestial body in an elliptical orbit around a star.
Back
Planet
4.
FLASHCARD QUESTION
Front
A system of millions or billions of stars, gas, and dust, held by gravity.
Back
galaxy
5.
FLASHCARD QUESTION
Front
Distance light travels in a year.
Back
light year
6.
FLASHCARD QUESTION
Front
Mean distance from Earth to Sun?
Back
Astronomical Unit (AU)
7.
FLASHCARD QUESTION
Front
An explanation based on limited evidence for further investigation; a testable prediction.
Back
hypothesis
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