Life Cycle of Stars

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, where star formation begins.

Front

True or False: Stars are produced in the nebula.

Back

True

Front

What is a black hole?

Back

A black hole is an object so dense that its gravity is so strong that even light cannot escape.

Front

True or False: A protostar is the last stage of a star's life.

Back

False

Front

How does the mass of a star affect its life span?

Back

The less mass a star has, the longer its life span.

Front

What is the main sequence in the life cycle of a star?

Back

The main sequence is the stable phase of a star's life where it fuses hydrogen into helium.

Front

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

Back

After exhausting hydrogen, a star may expand into a red giant or supergiant, depending on its mass.

Front

What is a supernova?

Back

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

Front

What is a white dwarf?

Back

A white dwarf is the remnant core of a star that has exhausted its nuclear fuel and shed its outer layers.

Front

What is the life cycle of a low-mass star?

Back

A low-mass star goes from nebula to protostar, main sequence, red giant, and finally to white dwarf.