HR Diagrams

Front

What color stars are the hottest?

Back

Blue stars are the hottest.

Front

Blue stars are the _____________.

Back

hottest.

Front

Compared to the rest of the stars, our sun is considered...

Back

Medium size with medium temperature.

Front

Aldebaran is a ____________

Back

red giant.

Front

What color stars are the coolest?

Back

Red stars are the coolest.

Front

What is the main sequence in the HR diagram?

Back

The main sequence is a continuous band of stars that represents the majority of stars, including our sun, which are in a stable phase of hydrogen burning.

Front

What does the HR diagram plot?

Back

The HR diagram plots stars according to their luminosity (brightness) and temperature (color).

Front

What type of star is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low to medium mass star after it has exhausted its nuclear fuel.

Front

What is a red giant?

Back

A red giant is a large star that has expanded and cooled after exhausting the hydrogen in its core.

Front

What is the significance of a star's color?

Back

A star's color indicates its temperature; blue stars are the hottest, while red stars are the coolest.