Review

A fan-shaped area where a river meets the ocean is called a ____________. This is formed when sediment and rock is deposited at the end of the river.

• Delta

• Sand Dune

• Weathering

• Sediment

A ______________ is a hill of sand created by the wind.

• Valley

• Delta

• Sand Dune

• Glacier

The process that breaks down rocks and other materials on Earth's surface is called

• erosion

• weathering

• deposition

What is the process that picks up and moves weathered rocks?

• erosion

• deposition

• weathering

A delta is formed by the action of -

• weathering

• erosion

• deposition

Weathering and erosion are the same thing.

• True

• False

What is the small broken down pieces of rock called?

• grime

• sediment

• dirt

Why do so many landslides occur near mountains, rather than in flat areas?

• Mountains have lots of rocks.

• The trees on the mountains tend to push down the dirt.

• People like to build their houses near mountains.

• Mountains are big hills which allow the dirt to slide down them quickly.

Fossil fuels were formed from ____.

• the remains of once living organisms.

• the earth

• solids, liquids, and gases, made millions of years ago.

• sun and water

When you heat your home or cook on your stove, you are most likely using _____.

• petroleum

• coal

• crude oil

• natural gas