Answer:
It is often assumed that the moon is a perfect sphere, which it is not. The side of the moon facing earth is more dense than the side facing away. Therefore, it takes energy for the moon to rotate its earth-facing side away from the earth. Such energy is not currently available, so the same side always faces earth, caught in earth’s gravity.
Explanation:
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Answer:
Karl Schwarzschild discovered black holes in 1916.
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Answer:
Gap hypothesis
Explanation:
This is because gap hypothesis states that the active fault displaces over a long period of time any part must be equal to what is experienced by all the other parts of the fault. These active fault that have fewer earthquakes at will present are mostly like to have stronger earthquakes in the Future.
A reason to theory should support the theory , and it can be testified also, otherwise it will not be considered as scientific theory.
So according to above explanation
<span>C. testable . . . supported is the correct answer.</span>