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The life cycle of stars

10th grade (Year 11 in England) · 11 questions · Common Core: NGSS.HS-ESS1-1, NGSS.HS-ESS1-3 · England: KS3 Physics: Space physics, KS4 Physics: Space physics (separate science)

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Score/ 11

1
Question 1
In the life cycle of a star like the Sun, what comes straight after "protostar"?
- A. white dwarf
- B. red giant
- C. main sequence star
- D. nebula (cloud of dust and gas)
2
Question 2
Where were elements heavier than iron made?
- A. in the Earth's oceans
- B. in supernova explosions and neutron-star collisions
- C. by plants
- D. in ordinary fires
3
Question 3
In the life cycle of a star much more massive than the Sun, what comes straight after "protostar"?
- A. red supergiant
- B. main sequence star
- C. supernova
- D. nebula
4
Question 4
What process releases energy in the core of a star?
- A. burning coal
- B. nuclear fission of uranium
- C. nuclear fusion of hydrogen into helium
- D. chemical reactions with oxygen
5
Question 5
In the life cycle of a star like the Sun, what comes straight after "nebula (cloud of dust and gas)"?
- A. protostar
- B. main sequence star
- C. red giant
- D. white dwarf
6
Question 6
Why is a main sequence star stable for billions of years?
- A. Gravity pulling in is balanced by pressure from fusion pushing out
- B. It has no gravity
- C. It stops fusion
- D. It is cold inside
7
Question 7
In the life cycle of a star like the Sun, what comes straight after "protostar"?
- A. nebula (cloud of dust and gas)
- B. white dwarf
- C. red giant
- D. main sequence star
8
Question 8
Where were elements heavier than iron made?
- A. in supernova explosions and neutron-star collisions
- B. in ordinary fires
- C. in the Earth's oceans
- D. by plants
9
Question 9
In the life cycle of a star much more massive than the Sun, what comes straight after "supernova"?
- A. neutron star or black hole
- B. red supergiant
- C. main sequence star
- D. protostar
10
Question 10
What process releases energy in the core of a star?
- A. burning coal
- B. chemical reactions with oxygen
- C. nuclear fusion of hydrogen into helium
- D. nuclear fission of uranium
11
Question 11
In the life cycle of a star like the Sun, what comes straight after "main sequence star"?
- A. protostar
- B. red giant
- C. nebula (cloud of dust and gas)
- D. white dwarf

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