Continental Drift Answers

When did people begin to notice that coastlines of continents fit together like puzzle pieces?

500,000 meters east50,000 meters west5,000 meters east500 meters west

volcanic islandsvolcanic mountainsnew ocean floormountains

Continental drift was first proposed by a scientist named Alfred [___]. He theorized that the [___] were once one large landmass that drifted apart very slowly over a long time.

oceansmountainsvalleys