Download The Life Cycle of a Star Webquest:

The Life Cycle of a Star Webquest:
http://www.enchantedlearning.com/subjects/astronomy/stars/lifecycle/starbirth.shtml
The Birth of a Star:
1. What is a nebulae? ______________ _______________________________________________
2. Put these steps in order.
______ The gas and dust compresses into a slowly rotating ball.
______ The gas ball begins to spin faster and cool.
______ A star begins to form from clouds of hydrogen gas and dust.
______ The ball separate into a core and spinning disks.
3. How long can a star stay a protostar? ____________________________
4. Explain nuclear fusion. ____________________________________________________________
______________________________________________________________________________________
5. How long does a star live before it begins to die? _______________________________
Sun-like stars.
*** Scroll back up and click on it.
6. How does a star like the sun become a Red Giant? _________________________________
______________________________________________________________________________________
______________________________________________________________________________________
7. Where does most of the mass of a red giant go when the star becomes a white
dwarf? _______________________________________________________________________________
8. The final stage of a medium sized star like the sun is a _________________________.
The death of a Huge Star:
*** Scroll back up and click on it.
9. What happens to a huge star when it becomes a red super giant? __________________
__________________________________________________________________________________________
10. The explosion of a red super giant creates a ___________________________________.
11. The final stages of a red super giant depend on the stars _____________________.
12. What happens to a star?
- Less than 3 times the size of the sun? _______________________________________
- Greater than 3 times the size of the sun? ___________________________________
13. How does a star become a black hole? ______________________________________________
_____________________________________________________________________________________
14. Could the Sun become a black hole? _______________________________________________
Life Cycle of a star Diagram:
http://library.thinkquest.org/C0110277/stars/life_cycle1.htm
Draw the Diagram of the life cycle of a star use this link OR pg. 735 in your
textbook.
Why do stars twinkle?
http://www.enchantedlearning.com/subjects/astronomy/stars/twinkle.shtml
15. What is the scientific name for the twinkling of stars? ___________________________
16. Why do stars twinkle? ____________________________________________________________
_____________________________________________________________________________________
17. Why don’t planets twinkle? _______________________________________________________
18. If you were in a spaceship would you be able to see a star twinkling? ____________
Why? ______________________________________________________________________________
The Closest Stars
http://www.enchantedlearning.com/subjects/astronomy/stars/nearest.shtml
19. What is the closest star to Earth? ________________________
How far away is it? _______________________
20. What is the brightest star in the sky? ____________________________
21. Draw the constellation Canis Major and label the star Cirrus on your diagram.
Constellations
http://www.enchantedlearning.com/subjects/astronomy/stars/constellations.shtml
22. How many constellations are in the sky? _________________________
23. ON THE BACK OF THIS PAPER: Look at the different constellations.
Choose your three favorites. Draw a diagram of each and describe what it
looks like.
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