Will occur spontaneously without the need of an activator because they have a great internal energy
Answer: I feel that the theory of plate tectonics is correct, because we use friction every day which means friction could make vibrations larger too!
Your answer will be Physical evidence it give people the chance when they find something that's a important like a weapon,or hair it gives experts the chance to see if they can figure out what happen so they can catch the guy who caused it to happen.
So your answer is Physical Evidence.
