What is a white dwarf?
B2 Review (2024)

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel and shed its outer layers. They are not the brightest stars.
2.
FLASHCARD QUESTION
Front
What are main sequence stars?
Back
Main sequence stars are stars that are in the stable phase of their life cycle, where they fuse hydrogen into helium in their cores. They cover a range of spectral classes.
3.
FLASHCARD QUESTION
Front
What is the relationship between the Southern and Northern Hemispheres during seasonal changes?
Back
When the Southern Hemisphere experiences the first day of fall, the Northern Hemisphere experiences the first day of spring.
4.
FLASHCARD QUESTION
Front
How does Arcturus compare to the Sun?
Back
Arcturus is cooler and brighter than the Sun.
5.
FLASHCARD QUESTION
Front
What happens at convergent plate boundaries?
Back
At convergent plate boundaries, tectonic plates move toward each other, often leading to geological phenomena such as earthquakes and mountain formation.
6.
FLASHCARD QUESTION
Front
What is the tilt of the Earth?
Back
The tilt of the Earth is approximately 23.5 degrees, which affects the seasons and the amount of sunlight received in different hemispheres.
7.
FLASHCARD QUESTION
Front
What are supergiants?
Back
Supergiants are among the largest and brightest stars in the universe, but they are not necessarily the hottest.
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