The Universe
Flashcard
•
Physics
•
8th Grade
•
Practice Problem
•
Hard
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the most commonly accepted theory that explains the beginning of our known universe?
Back
Big Bang Theory
2.
FLASHCARD QUESTION
Front
What stage in a star's life cycle is described when gravity pulls gases and dust particles together, leading to nuclear fusion?
Back
The birth of a star
3.
FLASHCARD QUESTION
Front
What are electromagnetic waves?
Back
Energy that travels through space very quickly.
4.
FLASHCARD QUESTION
Front
Why do scientists use light years to measure objects in space?
Back
Because of the massive distances in the galaxy and universe.
5.
FLASHCARD QUESTION
Front
What is the term for galaxies that are moving away from us?
Back
Red shifting.
6.
FLASHCARD QUESTION
Front
What is the definition of a galaxy?
Back
A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.
7.
FLASHCARD QUESTION
Front
What is a black hole?
Back
A region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.
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