The Life Cycle of Stars

Front

What is the process by which stars produce energy?

Back

Nuclear fusion.

Front

What is a nebula?

Back

A giant cloud of gas and dust in space that can collect due to gravity.

Front

What does the H-R diagram represent?

Back

The relationship between a star's luminosity and its temperature.

Front

True or False: Stars go through lifecycles.

Back

True.

Front

What is the primary element that stars fuse in their cores during the main sequence phase?

Back

Hydrogen.

Front

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

Back

It begins to fuse helium and may expand into a red giant.

Front

What is a supernova?

Back

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

Front

What is a black hole?

Back

A region in space where the gravitational pull is so strong that nothing, not even light, can escape.

Front

What is the main sequence?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Front

True or False: Most of the energy in the Universe is produced as stars undergo fusion.

Back

True.