Stars and HR Diagrams

Front

What is a white dwarf?

Back

A small, hot star near the end of its life.

Front

Which type of star is the hottest?

Back

Blue Star.

Front

Why does the sun appear so bright and hot?

Back

It is the closest star to Earth.

Front

What star is brighter than Alpha Centauri B but dimmer than the sun?

Back

Tau Ceti.

Front

What is the Hertzsprung-Russell Diagram?

Back

A graph used to classify stars according to their luminosity, color, temperature, and stage.

Front

What is a red dwarf?

Back

A small and relatively cool star on the main sequence.

Front

What is a supergiant star?

Back

An extremely large star that is much brighter than a giant star.

Front

What does luminosity refer to in stars?

Back

The total amount of energy emitted by a star per second.

Front

What is the main sequence in the HR diagram?

Back

A continuous band of stars that runs from the upper left to the lower right of the diagram.

Front

What is a protostar?

Back

An early stage in the formation of a star, before nuclear fusion begins.