Question

The Atlantic Ocean gets about 3-5 ______ wider each year.

Answer 1

3 to 5 centimeters per year is a good average to use for the Atlantic Ocean. Spreading in the Pacific is faster.

Answer 2

The Atlantic Ocean gets about 3-5 centimeters wider each year.

The tectonic plates move on the order of centimeters per year, so the ocean can only get wider by a few centimeters per year.