H-R Diagrams and Stellar Classification

Front

What does the brightness of stars determine on?

Back

Size and temperature.

Front

Who created stellar classification?

Back

Annie Jump Cannon.

Front

What were H-R Diagrams used for?

Back

Classifying stars and seeing how they change.

Front

What temperature are the hottest stars?

Back

Over 20,000 degrees Celsius.

Front

What temperature are the coolest stars?

Back

3,200 degrees Celsius.

Front

What is an H-R Diagram?

Back

A graph that plots stars according to their brightness and temperature.

Front

What are the two main types of brightness in stars?

Back

Absolute brightness and apparent brightness.

Front

What does absolute brightness refer to?

Back

The actual brightness of a star at a standard distance.

Front

What does apparent brightness refer to?

Back

The brightness of a star as seen from Earth.

Front

What color are the hottest stars?

Back

Blue.