Crash course astronomy the sun

“The Sun: Crash Course Astronomy #10”

1. The sun is a ______________________________________________________.

2. The vast majority of stars are much BIGGER SMALLER than the sun.

3. The sun is comprised mostly of _____________________________________________ gas.

4. If hydrogen is “ionized”, that means the ______________________ have been stripped from the atoms.

5. What famous equation describes what happens when protons comes together? ____________________

6. Hydrogen fusion occurs is the _____________________________________ of the sun.

7. What process transfers the heat throughout the sun? _______________________________________

8. The “sphere of light” is the ________________________________________________________.

9. The sun’s atmosphere is the _______________________________________________________________.

10. How long does it take light to reach the surface of the sun (by modern standards)? _____________________

11. The sun is not exactly a gas. It’s better to call it a _______________________________________________.

12. A dark, cooler spot on the surface of the sun is called a ______________________________________.

13. Sunspots INCREASE DECREASE the energy output of the sun.

14. When magnetic field lines snap, and as a result explode outward we get a ____________________________.

15. If a solar flare is like a tornado, a coronal mass ejection is like a ______________________________________.

16. When the Earth’s magnetic field interacts with the ejected material from the sun, we get ________________.

19. The first solar storm ever detected was in _____________________________________.

20. If the solar storm of 2012 had hit us, we’d have recovered by now. TRUE FALSE