Checkpoint 3

Front

What is a nebula?

Back

A nebula is a giant cloud of gas and dust in space, where stars are born.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What is the Main Sequence in stars?

Back

The Main Sequence is the category that contains the most stars, where they spend the majority of their life cycle.

Front

What happens to stars as we move to the left on the Hertzsprung-Russell diagram?

Back

As we move to the left, stars get hotter.

Front

What does a high mass star become after the main sequence?

Back

A high mass star becomes a supergiant after the main sequence.

Front

What is a black dwarf?

Back

A black dwarf is a theoretical stellar remnant that occurs when a white dwarf has cooled sufficiently that it no longer emits significant heat or light.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, where it expands and cools after exhausting its hydrogen fuel.

Front

What are supergiants?

Back

Supergiants are very large stars that are more massive than giants and can be found in various stages of stellar evolution.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

A spiral galaxy has a flat, rotating disk with arms, while an elliptical galaxy is more rounded and lacks the distinct structure of spiral arms.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant or supergiant, and finally, either a supernova or a white dwarf.