3-28-13

Vinnie Caringella

Astronomy

3-28-13

Quiz 15

1.The Sun shines because it sends out energy in all directions as radiation. This radiation takes the form of light and heat.

2. Core, radiation zone, convection zone, photosphere, chromosphere, and corona.

3. When the gravitational equilibrium and energy balance together act as a thermostat to regulate the core temperature because the fusion rate is sensitive to temperature.

4. By randomly bouncing photons carrying it through the radiation zone. 

5. A nuclear reaction in which a heavy nucleus splits spontaneously or on impact with another particle with the release of energy.

6. Yes

7. Yes

8. No

9. Helium

10. 0.7%