why is it likely that scientist will produce new theories to explain the movement of plates in the future?

Because with any theory it can be changed.

Explanation:

If new evidence is found to disclaim a theory then another theory will be made to replace the old theory. No theory can every be a law since it is a theory. Because theories can always be changed due to new evidence.

(so basically if they find new evidence about the movements of planets then that will make a new Theory)

Example: one of the early theories about how an atom looked like was By J.J Thompson. He said that an atom looked like a plum pudding. The electrons were the berries. People believed that for a long period of time since it was backed by science. Yet that was later disclaimed by new evidence which made a new theory.

(I hope this helps!)

:)

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