NAME ______DATE: ______PERIOD: ______
Video: How the Universe Works: Extreme Stars –
Please answer the following questions:
1. What stars do to the universe?
2. How many stars can we see in a clear night?
3. What is the sun?
4. How many Earths will fit inside the sun?
5. How many times is the star Betelgeuse bigger than Eta Carinae?
6. How many suns will fit in the largest star astronomers found in the universe?
7. What is a galaxy?
8. What optical telescopes cannot observe?
9. What the Spitzer telescope was able to capture?
10. After how many years a gas cloud in the cosmos becomes a giant spinning disk?
11. What was the biggest problem in physics early in the 20th century?
12. Which nuclear process is taking place in stars?
13. How atoms of hydrogen are forced to collide inside the Tokamak machine?
14. What is the origin of the energy released during the making of helium?
15. What force prevents a star from exploding during the fusion of hydrogen into helium?
16. How long does it take the light from Eta Carinae to reach planet Earth?
17. For how long photons travel inside the sun before they reach its surface?
18. What is produced by the speeding gases from the sun?
19. Scientists at Caltech are trying to learn how the magnetic loops produce ______.
20. What can happen to planet Earth if it is hit by a huge amount of solar wind?
21. How much hydrogen the sun burns every second?
22. How the nucleus of a star reacts when it is compressed by gravity?
23. How many times the radius of the sun will be multiplied during its expansion?
24. During the read giant stage, what nuclear reactions will take place inside the sun?
25. After the red giant phase, what type of star will the sun become?
26. What will be at its center when the sun becomes a white dwarf star?
27. Which star now is near its death according to some astronomers?
28. The making of what element sends a star to its death?
29. What do we call exploding stars?
30. What physicists are doing in a lab in Rochester, New Yow?
31. After a supernova explosion what is left behind?
32. All the elements produced by supernovas are essential for what?
33. How many atoms are needed to make an average human body?
34. What is the final fate of the universe?