HR Diagram

Front

What is a galaxy?

Back

A giant structure that contains dust, gases, and hundreds of billions of stars.

Front

How are galaxies classified?

Back

Galaxies are classified according to their shape.

Front

What type of galaxy has a central bulge and spiral arms?

Back

Spiral galaxy.

Front

Are giants hotter than white dwarfs?

Back

False.

Front

What happens to stars as we move to the left on the HR diagram?

Back

Stars get hotter.

Front

What is the HR diagram used for?

Back

The HR diagram is used to classify stars based on their luminosity and temperature.

Front

What are the main types of galaxies?

Back

The main types of galaxies are spiral, elliptical, and irregular.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

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

Back

Spiral galaxies have a flat, rotating disk with arms, while elliptical galaxies are more rounded and lack distinct features.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.