Unit 4: Changes to Earth's Surfaces

Front

What is a sand dune?

Back

A sand dune is a hill of sand built by the wind, often found in deserts or near beaches.

Front

What processes are involved in the formation of a sand dune?

Back

Both destructive and constructive processes are involved in the formation of a sand dune.

Front

What is deposition?

Back

Deposition is a constructive process that contributes to the creation or build-up of landforms by dropping off rocks, soil, or other materials.

Front

What is erosion?

Back

Erosion is the process of moving away rock, soil, or other materials on the Earth's surface by natural forces such as water, wind, or ice.

Front

How do volcanoes act as a constructive force?

Back

Volcanoes create new landforms and contribute to forming new soil from hardened lava.

Front

What natural forces can cause erosion?

Back

Erosion can occur due to water flow, wind action, ice movement, and gravity.

Front

What is weathering?

Back

Weathering is the process of breaking down rocks and minerals into smaller pieces by natural forces.

Front

What is the difference between constructive and destructive processes?

Back

Constructive processes build up landforms, while destructive processes wear them down.

Front

Give an example of a constructive process.

Back

An example of a constructive process is deposition.

Front

What role does gravity play in erosion?

Back

Gravity helps move materials downhill, contributing to erosion.