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Stars - The Universe
By Adrienne Shepard
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Last updated almost 6 years ago
25 questions
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Stars: Crash Course
Question 1
1.
What is spectroscopy?
Question 2
2.
Which stars emit blue light?
Cold stars
Hot stars
Nebula
Black holes
Question 3
3.
Which stars emit red light?
Cold stars
Hot stars
Nebula
Black holes
Question 4
4.
What do the dark (black) lines on the spectrum represent when looking at a star? Explain clearly.
Question 5
5.
What is the most abundant element in stars?
Helium
Iron
Hydrogen
Silicon
Question 6
6.
What is the approximate temperature of the sun's surface?
Question 7
7.
Explain why we don't see any green stars.
Question 8
8.
What colour is our sun? Explain.
Question 9
9.
What does a stars luminosity depend on?
Question 10
10.
Why is the Hertzsprung-Russell (H-R) diagram so important?
Question 11
11.
Why are higher massed stars generally hotter?
Question 12
12.
What are the rarest type of stars?
Low mass stars: Crash Course
Question 13
13.
How does the mass of a star affect it's life time?
Question 14
14.
What is a red dwarf? What happens to them at the end of their life cycle?
Question 15
15.
What is the approximate lifespan of the sun?
Question 16
16.
What is happening to the sun's brightness?
Question 17
17.
What are some of the changes the sun will undergo when it becomes a Red Giant?
Question 18
18.
What is the last phase of the sun's life cycle? Explain.
Question 19
19.
What affect will the changes occurring in the sun have on the Earth? Explain.
High Mass Stars: Crash Course
Question 20
20.
Explain why Silicon fusing is a problem for stars.
Question 21
21.
Why do higher mass stars have a shorter lifespan? Explain.
Question 22
22.
What affect does iron fusion have on a star?
Question 23
23.
What can be formed when a larger massed star's core collapses?
Question 24
24.
What is a supernova?
Question 25
25.
How are most heavy elements in the Universe created?