What is the mistake in this sentence As rocks move past each other along a fault their rough surfaces catch and permanently halt movement along the fault?

Answer 1

"Permanently" should read "temporarily".

Answer 2

The mistake in the sentence is the use of the word "permanently." While rocks can catch and temporarily halt movement along a fault, they can eventually release the stored energy and continue moving along the fault in an earthquake. Movement along faults is not permanently halted.