Unit 6 The Universe Re-Test

Front

What is a nebula?

Back

An area of gas and dust where new stars begin.

Front

What type of star is our sun?

Back

Our sun is an average or medium-sized star, a yellow star, and a low mass star.

Front

What is the final stage of a massive star's life cycle?

Back

Black Hole.

Front

What determines the length of a star's life cycle?

Back

A star's mass determines the length of its life cycle.

Front

What process produces energy in the Sun?

Back

Energy in the Sun is produced by the conversion of Hydrogen into Helium through nuclear fusion.

Front

What is a black hole?

Back

A region of space having a gravitational field so intense that no matter or radiation can escape.

Front

What is a galaxy?

Back

A system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is a neutron star?

Back

A type of stellar remnant that results from the gravitational collapse of a massive star after a supernova.

Front

What is a red giant?

Back

A late stage in the life cycle of a star where it expands and cools after exhausting the supply of hydrogen in its core.

Front

What is the main component of stars?

Back

The main component of stars is hydrogen.