The Sun

Front

If the stars in our galaxy were ranked in order, increasing in size, our Sun would be _____

Back

in the top 10%

Front

The vast majority of stars are _____

Back

red dwarfs

Front

Compared to the diameter of the Earth, how wide is the Sun?

Back

100 times wider

Front

How many Earths could fit inside the Sun?

Back

about 1.3 million

Front

What is the temperature of the Sun's core?

Back

15 million degrees Celsius

Front

In the Sun's core, hydrogen atoms fuse together to form the heavier element _____

Back

helium

Front

How often does the Sun lose a mass equivalent to 15 Empire State Buildings?

Back

every second

Front

In the Sun, where does hydrogen fusion occur?

Back

only in the core

Front

Heat transfer by the buoyant motion of the Sun's heated gases is called _____

Back

convection

Front

Which layer is thin enough to be transparent, and considered the Sun's surface? Options: the convective zone, the photosphere, the chromosphere, the corona

Back

the photosphere