1. Approximately how old is the the Sun?
1.5 billion years
3 billion years
4.5 billion years
6 billion years

2. How many Earths could fit in the volume of the Sun?
100,000
470,000
820,000
1.3 million

3. The Sun is mostly composed of which gas?
Hydrogen
Oxygen
Nitrogen
Helium

4. The Sun is approximatley how far from the center of our galaxy?
5 light years
500 light years
5,000 light years
25,000 light years

5. The Sun creates energy through which process?
Nuclear Fusion
Burning Helium
Burning carbon
Nuclear Fission

6. How high are temperatures at the center of the Sun?
10 million C / 18 million F
15 million C / 27 million F
50 million C / 90 million F
100 million C / 180 million F

7. The Sun accounts for how much of the solar system's total mass?
9.9%
19.9%
59.9%
99.9%

8. The visible surface of the Sun is called what?
The photosphere
The chromosphere
The corona
The transition region

9. What is the diameter of the Sun?
528,000 miles / 850,000 km
865,000 miles / 1.4 million km
1,058,000 miles / 1,703,000 km
1,492,000 miles / 2,401,000 km

10. What is the nearest star to the Sun?
Sirius A
Sirius B
Proxima Centauri
Epsilon Eridani