Unit 3 Assessment

Motion of the ground is most severe at an earthquakes _________________________.

• mantel

• epicenter

• volcano

• crust

Tectonic plates move over the partly melted layer of Earth called the _________________________.

• mantel

• epicenter

• volcano

• crust

Deltas, canyons, and caves are all parts of Earth's _________________________.

• mantel

• core

• volcano

• crust

An opening from which lava erupts is a(n) _________________________.

• core

• mountain

• volcano

• sediment

Weathering by wind, water, and ice produces _________________________.

• weathering

• deposition

• volcano

• sediment

Earth is made of many layers. The densest layer is the _________________________.

• core

• crust

• mantel

• sediment

The process of wearing away rock is known as _________________________.

• weathering

• deposition

• sediment

• erosion

A landslide quickly erodes sediment on a steep hill. When the landslide reaches the bottom of the hill, it slows down and finally comes to rest. The sediments it leaves are called _________________________.

• weathering

• deposition

• pebbles

• erosion

Many rocks contain gaps or cracks. In the picture, notice the relationship between the rock and the plant. Which statement best describes what will happen to the rock and the plant over time?

• The rock will crush the plant.

• The plant will be buried in the rock.

• The plant will grow, and the crack will get bigger.

• The rock will stop the plant from growing bigger.

Nick observed a landform on a trip to Alaska. What is the landform and how did it form?

• It is a valley that was carved by a glacier.

• It is a dune that formed as wind eroded sand.

• It is an arch that was carved by a slow moving river.

• It is a delta that formed when a river deposited sediment.