What happens to a star's core if it is less than 1.4 times the mass of the Sun?
Black Holes

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Physics, Science
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11th Grade - University
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It explodes as a supernova.
It becomes a neutron star.
It becomes a white dwarf.
It becomes a black hole.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the escape velocity of a neutron star?
11 kilometers per second
600 kilometers per second
300,000 kilometers per second
150,000 kilometers per second
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't the Sun become a black hole?
It is already a black hole.
It is too far from the Earth.
It is not massive enough.
It is too hot.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term used to describe the stretching effect experienced near a black hole?
Spaghettification
Time dilation
Gravitational pull
Event horizon
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to time as you approach a black hole?
It speeds up.
It reverses.
It remains constant.
It slows down.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for the boundary around a black hole where the escape velocity equals the speed of light?
Photon sphere
Accretion disk
Event horizon
Singularity
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect called when light loses energy trying to escape a black hole's gravity?
Time dilation
Doppler effect
Gravitational redshift
Spaghettification
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