Unit 5: Universe Review

Front

What spectral class does our star, the Sun, belong to?

Back

G

Front

What happens to a massive star after it becomes a supergiant?

Back

It explodes and becomes a supernova.

Front

What group of stars is represented by the letter C?

Back

White dwarfs.

Front

What type of galaxy do we live in?

Back

Spiral Galaxy.

Front

What type of galaxy is characterized by a flat, rotating disk containing stars, gas, and dust?

Back

Spiral Galaxy.

Front

What is a supernova?

Back

A supernova is the explosion of a massive star at the end of its life cycle.

Front

What are white dwarfs?

Back

White dwarfs are the remnants of stars that have exhausted their nuclear fuel and collapsed.

Front

What is the main sequence in stellar evolution?

Back

The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness.

Front

What is the difference between a red giant and a supergiant?

Back

Red giants are larger and cooler than main sequence stars, while supergiants are even larger and can be much hotter.

Front

What is an elliptical galaxy?

Back

An elliptical galaxy is a type of galaxy that has an ellipsoidal shape and lacks the distinct features of spiral galaxies.