Waterfalls Comprehension Questions

Front

Main idea of "Other Forms of Erosion"?

Back

Wind, ice, and gravity change the earth's surface through erosion.

Front

Diagram on page 13 titled "How a Waterfall Forms" shows how water erodes rock to create a waterfall and plunge pool.

Back

Water erodes rock to create a waterfall and plunge pool.

Front

Problem: Waterfalls like Niagara Falls are receding quickly. Solution: Scientists can slow this using dams and hydroelectric plants.

Back

Problem: Waterfalls like Niagara Falls are receding quickly. Solution: Scientists can slow this using dams and hydroelectric plants.

Front

Meaning of "receded" in context: Niagara Falls has moved backward over 11 km from its original formation.

Back

moved back

Front

Gravity erodes earth by pulling pieces down a mountain in a landslide.

Back

By pulling pieces of earth down the side of a mountain in a landslide.