Unit 3 Review

1

• What force was represented when the pepper moved to the middle of the swirling plate?

2

• What event did the floating pepper represent when it moved to the outside of the plate?

3

• Gravity pulls in on the material that makes up stars until what process occurs?

4

• How large is our planetary system?

5

• What does S.N.A.D. stand for?

6

• What is the approximate mass of the Solar System?

7

• What is the approximate mass of the Milky Way Galaxy?

8

• What is the difference between the formation of a planetary system and a galaxy?

9

• How old is the sun? The Solar System?

10

• Early astronomers (Greeks, Egyptians, and such) considered the Sun to be a planet. Why do you think they did this?

11

• List the layers of the Sun. Describe what goes on in each layer.

12

• Is the atmosphere of the Sun considered a part of the Sun? Give your reasoning.

13

• How often does proton-proton fusion happen in the Sun? (times per second)

14

• What is the wattage (energy output) of the Sun?

15

• How many layers does the atmosphere of the Sun have? List them.

16

• What is the temperature of the coolest and closest layer of the atmosphere? What molecules exist there that are not found anywhere else on the Sun?

17

• What color is the next layer of the atmosphere of the Sun?

18

• What force overtakes what other force in the next region?

19

• What does the temperature jump to in the previously described region and why does it do this?

20

• Is the Corona (Crown) of the Sun always present? Why can we see or not see it at all times?

21

• There is only one manmade object so far that has ever left the influence of the Sun. What is that object and when did it leave the heliosphere?

22

• About our solar viewer, what did we replace the foil with?

23

• What is a sunspot and what makes it cooler than the rest of the Sun?

24

• What is the difference between the Umbra and Penumbra of a sunspot?

25

• What does each granule on the surface of the Sun represent?

26

• What object is the sun like (think back to physics and magnetism) and how is it like that object?

27

• What is the relationship between light and heat on Sunspots? (How much more heat makes how much more light?)