Students should use annotated diagrams to explain the formation of a waterfall, demonstrating understanding of the different rock types involved and the different erosion processes that take place.

Melvin introduced a film clip that showed Zack Mutton, a “champion extreme kayaker,” as Melvin said, taking a gasp-inducing plunge down a nearly 100-foot waterfall. The New Zealand athlete set ...

Students should use annotated diagrams to explain the formation of a waterfall, demonstrating understanding of the different rock types involved and the different erosion processes that take place.