8.8A Components of the Universe Mini Flashcard #2

Front

What is a nebula?

Back

A nebula is a large cloud of dust and gas in space that may spin and eventually become a star.

Front

Which student described a nebula and a star correctly?

Back

Student 3 described the two celestial bodies correctly.

Front

What is a galaxy?

Back

A galaxy is a massive system of stars bound together by gravity.

Front

How is a star defined?

Back

A star is a celestial body composed of gases that emit light due to nuclear reactions.

Front

What is the relationship between a galaxy and a star?

Back

A galaxy has more mass than a star but less mass than the universe.

Front

What is the primary component of a nebula?

Back

The primary component of a nebula is dust and gas.

Front

What process can a nebula undergo to form a star?

Back

A nebula may spin and collapse under its own gravity to form a star.

Front

What is the difference between a star and a planet?

Back

A star emits light due to nuclear reactions, while a planet does not emit light and orbits a star.

Front

What is the role of gravity in galaxies?

Back

Gravity binds the stars together in a galaxy.

Front

Can a nebula become a galaxy?

Back

No, a nebula can become a star, while a galaxy is a larger structure that contains many stars.