Black Holes
Flashcard
•
Other Sciences
•
9th - 12th Grade
•
Hard
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20 questions
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1.
FLASHCARD QUESTION
Front
If a dying star's core is less than 1.4 times the mass of the Sun, it becomes ___
Back
a white dwarf
2.
FLASHCARD QUESTION
Front
If a dying star's core is between 1.4 and 2.8 times the Sun's mass, it becomes ___
Back
a neutron star
3.
FLASHCARD QUESTION
Front
If a dying star's core is more than 2.8 times the Sun's mass, it becomes ___
Back
a black hole
4.
FLASHCARD QUESTION
Front
For Earth, the escape velocity is about ___
Back
11 km per second
5.
FLASHCARD QUESTION
Front
A neutron star, with its immense gravity, can have an escape velocity that's up to ___
Back
half the speed of light
6.
FLASHCARD QUESTION
Front
Nothing can escape, not even light, once the core of a neutron star shrinks down to ___
Back
roughly 18 km
7.
FLASHCARD QUESTION
Front
The surface around a black hole, where the escape velocity is the speed of light, is called ___
Back
the event horizon
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