The Sun and Other Stars

Front

What are the three layers of the Sun's atmosphere?

Back

photosphere, chromosphere, corona

Front

As you read an HR diagram from left to right, what happens to the temperature?

Back

temperature decreases

Front

What two properties is the HR diagram based on?

Back

temperature and absolute brightness (luminosity)

Front

What process causes a star to shine?

Back

nuclear fusion

Front

What property is used to determine a star's surface temperature?

Back

color

Front

What is the core of the Sun?

Back

The innermost layer where nuclear fusion occurs, producing energy.

Front

What is the photosphere?

Back

The visible surface of the Sun that emits light.

Front

What is the chromosphere?

Back

The layer above the photosphere, visible during solar eclipses, with a reddish glow.

Front

What is the corona?

Back

The outermost layer of the Sun's atmosphere, extending millions of kilometers into space.

Front

What does the HR diagram represent?

Back

A graph that plots stars according to their brightness and temperature.