Stars and HR Diagrams

Front

What is a star?

Back

A large celestial body that is made of plasma and held together by gravity.

Front

What word best describes our sun?

Back

Average

Front

What are the largest stars called?

Back

Supergiants

Front

Which star is considered a giant star?

Back

Mira

Front

Which star is the coldest?

Back

Red Star

Front

What is the main component of stars?

Back

Hydrogen, which undergoes nuclear fusion to produce energy.

Front

What is the Hertzsprung-Russell (HR) diagram?

Back

A scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What are the main regions of the HR diagram?

Back

Main sequence, giants, supergiants, and white dwarfs.

Front

What is a main sequence star?

Back

A star that is in the stable phase of hydrogen burning in its core.

Front

What is a red giant?

Back

A star that has expanded and cooled after exhausting the hydrogen in its core.