HR diagram flashcard

Front

What category is the sun in?

Back

The sun is in the 'main sequence' category of stars.

Front

What does the HR diagram represent?

Back

The HR diagram represents the relationship between the brightness and temperature of stars.

Front

Is the HR diagram about stars?

Back

True, the HR diagram is specifically about stars.

Front

What color is the hottest on the HR diagram?

Back

Blue is the hottest color on the HR diagram.

Front

What color is the coolest on the HR diagram?

Back

Red is the coolest color on the HR diagram.

Front

Does temperature affect the position of stars on the HR diagram?

Back

Yes, temperature is a key factor in determining a star's position on the HR diagram.

Front

What are the two main axes of the HR diagram?

Back

The vertical axis represents brightness (luminosity) and the horizontal axis represents temperature.

Front

What is a supergiant star?

Back

A supergiant star is a very large and bright star that is much more massive than the sun.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

What is the significance of the main sequence on the HR diagram?

Back

The main sequence is where most stars, including the sun, spend the majority of their lifetimes.