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The Universe: Life & Death of a Star Key
Forces of Gravity
1. How many stars are in our galaxy?
400 billion in our galaxy (time stamp: 1:35)
2. What is the key component (element) found in
stars?
3. What is a star constantly at war/fighting with?
Hydrogen (time stamp: 2:49)
4. In what state do stars spend most of their life
cycle? (Our sun is currently in this phase)
5. What are the most common types of stars in
our universe?
6. This type of star has a surface temperature of
45,000 degrees F and is up to 20 times the
mass of the sun.
7. How long will our Sun live?
Main sequence (time stamp: 7:22)
White Dwarfs (After 2nd Intro Frame)
8. What is a white dwarf?
Gravity (time stamp: 5:40)
Red dwarf (time stamp: 8:28)
Blue main sequence (time stamp: 9:04)
10 billion total years (time stamp: 11:08)
5 billion years left (time stamp: 13:07)
Stellar remnant, very dense (time stamp: 17:56)
9. Which stage of the star’s life cycle will be a
white dwarf?
10. What can a white dwarf do to its companion
star?
All from the Stars (After 3rd intro frame)
11. Where did the elements in your body originally
come from?
12. How big are neutron stars?
Final (time stamp: 18:36)
13. How much would a teaspoon of neutron star
weigh? How much would a 150 lb. person
weigh?
14. What is formed when a star finally dies and
collapses?
15. Can things be sucked into black holes? Why?
1 billion tons. 10 billion tons. (time stamp: 28:52)
Explosive Collisions Stars (After 4th intro frame)
16. What do these super large stars produce?
17. What happens when 2 neutron stars collide?
What is produced?
18. What is the chance of a collision between the
sun and another star?
Failed Stars (After 5th intro frame)
19. What are “blue stragglers”?
20. Which types of stars are known as “failed
stars” that don’t have enough mass to create
energy?
© Copyright 2014.
Steal its lifeblood (time stamp: 19:54)
Long dead stars (time stamp: 26:28)
10 miles across (time stamp: 28:15)
Black hole (time stamp: 30:40)
No. only close objects (time stamp: 31:28)
Heavy elements – Iron (time stamp: 33:56)
Circle each other before collision. Energy. (time stamp: 36:35)
Billion to 1 (time stamp: 38:20)
Stars younger than surrounding stars in cluster –result of two
older stars colliding. (time stamp: 40:00)
Brown dwarf (time stamp: 42:07)
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