Unit 1 Review '23

Front

What happens when helium fusion begins in a massive, blue, main sequence star?

Back

The star becomes a red super giant.

Front

What does the temperature of a star determine?

Back

The color of the star.

Front

What is the bottom layer of the outer atmosphere of a star called?

Back

Chromosphere.

Front

What is the phenomenon called when galaxies move away from our galaxy, causing a shift in the electromagnetic spectrum?

Back

Redshift.

Front

What is the visible surface of the Sun called?

Back

Photosphere.

Front

What is the primary factor that determines a star's color?

Back

Temperature.

Front

What layer of the Sun is above the photosphere?

Back

Chromosphere.

Front

What is the outermost layer of the Sun's atmosphere?

Back

Corona.

Front

What does redshift indicate about the movement of galaxies?

Back

Galaxies are moving away from us.

Front

What is the main sequence phase of a star?

Back

A stable phase where a star fuses hydrogen into helium.