Life Cycle of Stars, HR Diagram & EMS Review

Front

What happens to the most massive stars when they die?

Back

They may become a black hole.

Front

What element fuels Betelgeuse, a Supergiant star, according to the HR diagram?

Back

Helium.

Front

What two things are measured on the HR Diagram?

Back

Brightness and temperature.

Front

What is the HR diagram NOT useful for studying?

Back

Location.

Front

How many blue Main Sequence stars are indicated on the HR diagram?

Back

4.

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 the main purpose of the HR diagram?

Back

To classify stars based on their brightness and temperature.

Front

What is a Supernova?

Back

A powerful and luminous explosion that occurs at the end of a star's life cycle.

Front

What is the difference between a star's brightness and its luminosity?

Back

Brightness is how bright a star appears from Earth, while luminosity is the total amount of energy emitted by the star.

Front

What does the term 'Main Sequence' refer to in the context of the HR diagram?

Back

A continuous and distinctive band of stars that appears on plots of stellar color versus brightness.