Unit 3 Science Review

The rocks at the bottom of the Grand Canyon are the oldest.

• True

• False

Oceans and streams continue to change landscapes today.

• True

• False

Changes to landscapes are always catastrophic.

• True

• False

Weathering and erosion affect structures built by people.

• True

• False

Weathering and erosion affect structures built by people.

• True

• False

All landscape changes are caused by humans.

• True

• False

Wind and glaciers can cause weathering and erosion.

• True

• False

Glaciers are solid, so they cannot move.

• True

• False

Fossils found in landscapes are as old as the layer in which they are found.

• True

• False

Which of the following most likely formed the Grand Canyon?

• A sudden earthquake

• People mining for copper

• Erosion of rocks by rivers

• Heat from the Sun cracking the ground over a long period of time