GCSE Earth and Space – Life cycle of a star
Learning Objectives
-I can describe the life cycle of a star about the same size as our sun
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Question 1 of 48
1. Question
What do stars initially form from?
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Question 2 of 48
2. Question
What are the clouds of dust and gas which form stars called?
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Question 3 of 48
3. Question
What does the force of gravity cause dust and gas to do?
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Question 4 of 48
4. Question
What quickly happens to a protostar?
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Question 5 of 48
5. Question
What happens as the protostar develops?
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Question 6 of 48
6. Question
What happens when temperature gets high enough in a protostar?
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Question 7 of 48
7. Question
When the protostar heats up enough, what stage does it enter?
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Question 8 of 48
8. Question
What happens once a star is in its main sequence?
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Question 9 of 48
9. Question
How long does the main sequence of a star normally last?
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Question 10 of 48
10. Question
How does the size of a star change during its main sequence?
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Question 11 of 48
11. Question
Why are main sequence stars stable?
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Question 12 of 48
12. Question
When a star is in its main sequence, how do outward and inward forces balance?
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Question 13 of 48
13. Question
If a star has more mass, will its main sequence be longer or shorter?
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Question 14 of 48
14. Question
Why will a star with more mass have a shorter main sequence?
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Question 15 of 48
15. Question
When does a star “die”, ending its main sequence?
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Question 16 of 48
16. Question
What do we call small stars?
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Question 17 of 48
17. Question
What happens to small stars once they die?
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Question 18 of 48
18. Question
Why are Red Giants red?
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Question 19 of 48
19. Question
When a Red Giant cools, what happens?
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Question 20 of 48
20. Question
What is the name for the dust and gas a Red Giant ejects?
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Question 21 of 48
21. Question
What is left over once a Red Giant ejects its outer layer?
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Question 22 of 48
22. Question
What is a white dwarf?
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Question 23 of 48
23. Question
What happens to a white dwarf over time?
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Question 24 of 48
24. Question
What do we call large stars?
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Question 25 of 48
25. Question
What happens to large stars once they die?
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Question 26 of 48
26. Question
What do Red Supergiants do?
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Question 27 of 48
27. Question
What process forms elements in Red Supergiants?
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Question 28 of 48
28. Question
What is a difference between Red Giants and Red Supergiants?
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Question 29 of 48
29. Question
What else is a difference between Red Giants and Red Supergiants?
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Question 30 of 48
30. Question
What happens once a Red Supergiant runs out of fuel?
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Question 31 of 48
31. Question
What happens once a Red Supergiant stops fusion?
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Question 32 of 48
32. Question
What happens in a supernova?
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Question 33 of 48
33. Question
What do the new elements formed in a supernova do?
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Question 34 of 48
34. Question
When a supernova explodes, what happens?
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Question 35 of 48
35. Question
What is most commonly left after a supernova explosion?
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Question 36 of 48
36. Question
If the large star is big enough, what is left after a supernova?
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Question 37 of 48
37. Question
What is a black hole?
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Question 38 of 48
38. Question
What gives black holes their name?
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Question 39 of 48
39. Question
What will a light star smaller than the Sun never undergo?
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Question 40 of 48
40. Question
What will a very large star never form?
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Question 41 of 48
41. Question
What happens to force when hydrogen fuel in the star core runs out?
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Question 42 of 48
42. Question
When the force of gravity is larger than the outward pressure on a star, what happens?
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Question 43 of 48
43. Question
How are elements heavier than iron produced?
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Question 44 of 48
44. Question
How are elements lighter than iron produced?
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Question 45 of 48
45. Question
What does nuclear fusion give out?
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Question 46 of 48
46. Question
What do hydrogen nuclei first form in nuclear fusion?
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Question 47 of 48
47. Question
What does the energy released by nuclear fusion provide?
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Question 48 of 48
48. Question
What does all the mass in the star cause?
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