What triggers the collapse of a molecular cloud to form a star?
What Is Stellar Evolution? | Facts About The Lifecycles of Stars

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Performing Arts, Physics, Science, Chemistry
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KG - 9th Grade
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The decrease in density
The increase in temperature
The presence of cosmic dust
A shockwave from a nearby exploding star
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary composition of a molecular cloud?
Helium and cosmic dust
Molecular hydrogen and cosmic dust
Oxygen and nitrogen
Carbon dioxide and water vapor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During the early stages of a star's life, what process begins in a protostar?
Chemical reaction
Nuclear fusion
Gravitational collapse
Magnetic field generation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role do stellar winds play in the formation of a main sequence star?
They stop nuclear fusion
They cool down the star
They clear away dust and gas
They increase the star's mass
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a main sequence star like the sun maintain its stability?
Through rapid rotation
By absorbing nearby stars
Through the balance of nuclear fusion and gravity
By continuously expanding
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