
Lifecycle of a Star

Interactive Video
•
Physics, Chemistry, Science
•
9th - 12th Grade
•
Easy

Sophia Harris
Used 1+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the core of a main sequence star as more helium is produced?
It becomes less dense.
It starts to cool down.
It remains the same.
It becomes more dense.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does the surface of a red giant become cooler as the star expands?
Because the core stops producing energy.
Because the energy is spread over a larger surface area.
Because the star loses mass.
Because the core temperature decreases.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the size of a red giant compare to its original main sequence star size?
It is the same size.
It is smaller.
It is much larger.
It varies randomly.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary result of helium fusion in the core of a red giant?
Cooling of the core.
Complete collapse of the star.
Formation of heavier elements like carbon and oxygen.
Formation of lighter elements.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary reason a red giant's core becomes unstable?
Lack of hydrogen fuel.
Excessive helium fusion.
Rapid cooling of the core.
Insufficient gravitational pressure.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a white dwarf primarily composed of?
Iron and nickel.
Carbon and oxygen.
Hydrogen and helium.
Silicon and sulfur.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What prevents a white dwarf from collapsing further?
Radiation pressure.
Magnetic fields.
Nuclear fusion reactions.
Electron degeneracy pressure.
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