Which statement is TRUE about nuclear FUSION?

Question

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1 point
Nuclear fusion only releases a small amount of energy.
Nuclear fusion occurs when two atoms slam together to form one, heavier atom
Nuclear fusion is used to provide electricity at nuclear power plants
Nuclear fusion is when atoms split apart

Answer 1

Nuclear fusion occurs when two atoms slam together to form one, heavier atom.

Answer 2

Which is evidence for the existence of dark energy?
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1 point
galaxies that are rotating at a constant rate
Pulsars that seem to be moving closer at an accelerating rate
Black holes that are expanding at a constant rate
Supernovae that are moving away at an accelerating rate

Answer 3

Supernovae that are moving away at an accelerating rate is evidence for the existence of dark energy.

Answer 4

Which characteristic is shared by both dark matter and baryonic matter?
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1 point
They both have gravity
They both are capable of absorbing light
They both interact with each other
They both have been directly observed by scientists

Answer 5

They both have gravity is a characteristic shared by both dark matter and baryonic matter.