Life Cycle of Stars, HR Diagram & EMS Review

Front

What is the main element that fuels Supergiant stars like Betelgeuse?

Back

Helium

Front

What does the HR diagram NOT help to study?

Back

Location

Front

What is the shape of a spiral galaxy?

Back

A galaxy that has a winding structure with arms.

Front

How do the characteristics of two stars on the HR diagram compare if Star 1 is hotter and brighter than Star 2?

Back

Star 1 is hotter and brighter than Star 2.

Front

What stage in the Life Cycle of a star is the sun classified as?

Back

Main Sequence

Front

What are the main axes of the HR diagram?

Back

Brightness (luminosity) and temperature.

Front

What is a nebula?

Back

A large cloud of gas and dust in space, often the birthplace of stars.

Front

What is a protostar?

Back

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

Front

What happens during the Red Giant phase of a star's life cycle?

Back

The star expands and cools after exhausting its hydrogen fuel.

Front

What is the significance of the Main Sequence in the life cycle of stars?

Back

It is the longest stage where stars fuse hydrogen into helium.