Universe Test Review - MOD

Front

What are the stages all stars in the universe go through?

Back

Nebula, protostar, main sequence.

Front

Why are nebulas referred to as 'star nurseries'?

Back

Because they are the birthplaces of stars.

Front

Where is a red supergiant located on the HR Diagram?

Back

Top right.

Front

How are galaxies classified?

Back

According to their shape.

Front

List the colors of stars from coolest to hottest.

Back

Red, red-orange, yellow, white, blue.

Front

What is a nebula?

Back

A large cloud of gas and dust in space, often the birthplace of stars.

Front

What is a protostar?

Back

A stage in star formation where a cloud of gas and dust begins to collapse under gravity.

Front

What is the main sequence phase of a star?

Back

The longest phase in a star's life where it fuses hydrogen into helium.

Front

What happens to a star after it exhausts its hydrogen fuel?

Back

It can expand into a red giant or supergiant, depending on its mass.

Front

What is a supernova?

Back

A powerful explosion that occurs at the end of a massive star's life cycle.