the sun

(1:05) What is the solar system?

• .

• • A group of stars in the galaxy

• • The Moon and planets around Earth

• • The Sun and all the planets that travel around it

• • The space outside the Milky Way

How long does it take Earth to go around the Sun?

• • 24 hours

• • 30 days

• • About 365 days

• • 1000 days

(2:01) What is the temperature on the surface of the Sun?

• • About 27°C

• • About 5700°C

• • About 100°C

• • About 10,000°C exactly

(2:19) How much wider is the Sun compared to the Earth?

• .

• • 10 times wider

• • 50 times wider

• • Over 100 times wider

• • 1000 times wider

3:19) What are supergiant stars?

• • Smaller than the Sun

• • The same size as the Sun

• • Twice the size of the Sun

• • Over 1000 times wider than the Sun

(3:49) Why does the Sun look bigger than other stars in the night sky?

• • Because the Sun is hotter

• • Because the Sun is the closest star to Earth

• • Because the Sun has rings around it

• • Because the Sun moves faster

(4:19) Why is the Sun’s distance from Earth “just right”?

• • If closer, Earth would be colder

• • If farther, Earth would be hotter

• • If closer, Earth would be too hot; if farther, too cold

• • Because the Sun never changes