1. Jeopardy Final Jeopardy ??Mystery?? Stellar Evolution HR Diagram Solar
Activity
Nuclear
Fusion
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Final Jeopardy

2. 1 - $100
This is the visible surface of the sun
Photosphere

3. 1 - $200 List stars from hottest to coolest
Blue, White, Yellow, Orange, Red

4. 1 - $300
Solar winds interact with Earth to create what?
Auroras

5. 1 - $400
What does a white dwarf become when fusion stops and it no longer shines?
Black dwarf

6. 1 - $500 Which stars live longer… low mass or high mass? WHY?
Low mass because they use their fuel more slowly.

7. 2 - $100 Before a star is formed it is just the gas and dust of a
Nebula

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A star is born when what begins
Fusion

9. 2 - $300
When the outward force of fusion is greater than the inward force of gravity what forms?
Giant

10. 2 - $400 An explosion that marks the end of a high mass star’s life
Supernova

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This is the force that causes a nebula to contract
Gravity

12. 3 - $100 Two characteristics that an HR diagram relates
Temperature and Brightness

13. 3 - $200
Where are the white dwarfs located
Bottom left

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This is the area on the HR diagram where stars spend most of their lives
Main Sequence

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Where are the giants located
Top Right

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Characterize Giants
Extremely bright with low temperatures

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This is a dark area of the photosphere that is cooler than the surrounding areas
Sunspot

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This is a loop or arch or gas that extends from the photosphere
Prominence

19. 4 - $300 This is an explosive release of energy from the sun
Solar flare

20. 4 - $400
How long is the sunspot cycle?
10-11 years

21. 4 - $500 Where on Earth do we usually see auroras?
Near the north and south poles

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This is where fusion occurs in stars
Core

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This is the product of nuclear fusion in stars
Helium

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Fusion begins when these 2 particles collide
2 protons

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The helium atom made during fusion has ________ protons 2

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The amount of hydrogen in a star increases/decreases as fusion continues
Decreases

27. Final Jeopardy Explain why the Earth has seasons.
Because the Earth is tilted on its axis:
In the summer, the Earth is tilted TOWARD the sun, making the sun rays more direct and the temperature warmer.
In the winter, the Earth is tilted AWAY from the sun, causing the rays to be less direct and the temperature colder.