B2 Review (2024)

B2 Review (2024)

Assessment

Flashcard

Science

8th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is a white dwarf?

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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