Galaxy, Nebulas & DSO Test Review

Front

What is a nebula?

Back

A giant cloud of dust and gas in space.

Front

What are the three types of galaxies?

Back

Spiral Galaxies, Irregular Galaxies, and Elliptical Galaxies.

Front

What causes a nebula to form?

Back

When portions of the interstellar medium undergo gravitational collapse, both gravitational attractions collapse together.

Front

What is the most accurate way to determine the distance to a relatively nearby star (within the Milky Way)?

Back

Stellar parallax.

Front

What type of galaxy is characterized by a spiral shape?

Back

Spiral galaxy.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.

Front

What is an irregular galaxy?

Back

A galaxy that does not have a distinct regular shape.

Front

What is an elliptical galaxy?

Back

A galaxy shaped like an elongated sphere, with older stars and little gas and dust.

Front

What is the interstellar medium?

Back

The matter that exists in the space between stars, consisting of gas and dust.

Front

What role do stars play in the formation of nebulae?

Back

Stars can explode as supernovae, dispersing gas and dust that can form new nebulae.