Earth Science.Unit 1.Flashcard 1.25-26
Flashcard
•
Science
•
11th Grade
•
Practice Problem
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Easy
Mallory Hogan
Used 1+ times
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25 questions
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1.
FLASHCARD QUESTION
Front
The Big Bang Theory states the universe began about how many years ago?
Back
13.8 billion years ago
2.
FLASHCARD QUESTION
Front
Which evidence shows that galaxies are moving away from us?
Back
Red shift of light
3.
FLASHCARD QUESTION
Front
What are the two lightest elements that formed soon after the Big Bang?
Back
Hydrogen and Helium
4.
FLASHCARD QUESTION
Front
What process powers stars by combining lighter elements into heavier ones?
Back
Nuclear fusion
5.
FLASHCARD QUESTION
Front
What happens to massive stars at the end of their lives?
Back
They explode as supernovae
6.
FLASHCARD QUESTION
Front
Which diagram classifies stars by luminosity, size, and temperature?
Back
Hertzsprung-Russell (HR) Diagram
7.
FLASHCARD QUESTION
Front
According to the Nebular Hypothesis, planets and stars formed from what?
Back
A rotating nebula of gas and dust
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