What is the primary process occurring in stars during the main sequence phase?

Star Evolution and Characteristics

Interactive Video
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Physics, Science, Other
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9th - 12th Grade
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Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Conversion of carbon to oxygen
Conversion of oxygen to nitrogen
Conversion of helium to carbon
Conversion of hydrogen to helium
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the mass of a star affect its lifespan on the main sequence?
Larger stars have longer lifespans
Smaller stars have shorter lifespans
Larger stars have shorter lifespans
Mass does not affect lifespan
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to a star's core when it exhausts its hydrogen fuel?
The core expands and cools
The core becomes a black hole
The core contracts and heats up
The core remains unchanged
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the composition of a star's core and surrounding shell after hydrogen is depleted?
Carbon core with a helium-burning shell
Nitrogen core with an oxygen-burning shell
Helium core with a hydrogen-burning shell
Oxygen core with a carbon-burning shell
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does Betelgeuse compare to the Sun in terms of size?
Betelgeuse is the same size as the Sun
Betelgeuse is twice the size of the Sun
Betelgeuse is smaller than the Sun
Betelgeuse is nearly a thousand times larger than the Sun
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the core temperature of Betelgeuse compared to the Sun?
Betelgeuse has a higher core temperature
Betelgeuse has no core temperature
Betelgeuse has a lower core temperature
Betelgeuse has the same core temperature
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What visible changes occur in a star as it evolves off the main sequence?
The star becomes smaller and dimmer
The star becomes larger and more luminous
The star becomes a black hole
The star remains the same size and brightness
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