Unit 6: Universe
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a Nebula?
Back
A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.
2.
FLASHCARD QUESTION
Front
What is the Main Sequence in stellar evolution?
Back
The Main Sequence is a stage in a star's life cycle where it fuses hydrogen into helium in its core.
3.
FLASHCARD QUESTION
Front
What is a Red Giant?
Back
A red giant is a late stage in a star's life cycle when it has exhausted hydrogen in its core and expands.
4.
FLASHCARD QUESTION
Front
What is a Planetary Nebula?
Back
A planetary nebula is a shell of gas ejected from a star during the late stages of its evolution.
5.
FLASHCARD QUESTION
Front
What is a White Dwarf?
Back
A white dwarf is a small, dense star that is the remnant of a star like the Sun after it has shed its outer layers.
6.
FLASHCARD QUESTION
Front
What is a Black Dwarf?
Back
A black dwarf is a theoretical stellar remnant that occurs when a white dwarf cools down and no longer emits significant heat or light.
7.
FLASHCARD QUESTION
Front
What are the original two elements in the universe?
Back
The original two elements in the universe are Helium and Hydrogen.
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