Ch. 2 Review: Stars & Galaxies

Front

What is a nebula?

Back

An immense cloud of dust and gas where stars are born.

Front

What is the apparent magnitude of a star?

Back

The brightness of a star as viewed from Earth.

Front

What type of galaxy is oval-shaped?

Back

An elliptical galaxy.

Front

What type of galaxy has no specific shape or form?

Back

An irregular galaxy.

Front

What do less massive stars become when they die?

Back

A white dwarf.

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 from it.

Front

What is a supernova?

Back

A powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is a spiral galaxy?

Back

A galaxy characterized by its spiral shape, with arms that wind outward from the center.

Front

What is the difference between absolute magnitude and apparent magnitude?

Back

Absolute magnitude measures a star's brightness at a standard distance, while apparent magnitude measures brightness as seen from Earth.

Front

What is a red giant?

Back

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