8.8A Components of the Universe Mini Flashcard #2

Front

What is a massive system of stars bound together by gravity called?

Back

A galaxy.

Front

What is a nebula?

Back

A large cloud of dust and gas that may spin and eventually become a star.

Front

How would you best describe a star?

Back

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

Which student described a nebula and a star correctly?

Back

Student 3.

Front

What is the primary component of a nebula?

Back

Dust and gas.

Front

What process allows a star to emit light?

Back

Nuclear reactions occurring in its core.

Front

What is the difference between a star and a planet?

Back

A star emits light due to nuclear fusion, while a planet does not emit light and reflects light from a star.

Front

What is the role of gravity in the formation of galaxies?

Back

Gravity pulls stars together to form a galaxy.

Front

What is the universe?

Back

The universe is the totality of all space, time, matter, and energy.