Download The Life Cycle of a Star Webquest

Name: __________________________
Exploring Outer Space
1. Blackhole website
http://hubblesite.org/explore_astronomy/black_holes/
- What is a blackhole? ______________________________________________________
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Should we worry about a black hole sucking Earth in? Why or why not?
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Click on Journey to the Blackhole.
Drag the view finder to find all the following objects. Put a check beside each
object you find.
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Moon
Sun
Planet
Supernova remnant
X-ray binary
Quasar
Spiral galaxy
Elliptical galaxy
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Binary Star
Red Giant
Planetary nebula
Extragalactic bianary
Milky Way center
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Drag the view finder on a black hole and then click BEGIN YOUR VOAGE.
Journey to either one of the black hole choices. Which one did you choose?
___________________
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How fast did you have to go to escape Earth’s gravity? _____________
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At this speed how long will it take you to reach Pluto? ____________
http://hubblesite.org/explore_astronomy/black_holes/encyc_mod3_q16.html
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Once you get inside the black hole, what happens? ________________________
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OVER
2. The Life Cycle of a Star
http://www.enchantedlearning.com/subjects/astronomy/stars/lifecycle/starbirth.sh
tml
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. ____________________________________________________________
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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? _________________________________
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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? __________________
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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.shtm
l
15. What is the scientific name for the twinkling of stars? ___________________________
16. Why do stars twinkle? ____________________________________________________________
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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 second 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/constellation
s.shtml
22. How many constellations are in the sky? _________________________
23. Look at the different constellations. Choose your two favorites. Draw a
diagram of each and describe what it looks like.
Name:
Name:
Picture:
Picture:
Description:
Description: