Unit 4 - Changes to Earth's Surface

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

Front

What is weathering?

Back

Weathering is the breaking down of rocks and minerals into smaller pieces by natural forces like water, ice, and temperature changes.

Front

What is a canyon?

Back

A canyon is a deep valley with steep sides, often formed by the erosion of rock by a river over a long period.

Front

What is a delta?

Back

A delta is a landform that forms at the mouth of a river where it meets a body of water, created by the deposition of sediment.

Front

What causes landslides?

Back

Landslides are caused by the movement of rock, earth, or debris down a slope, often triggered by heavy rain, earthquakes, or volcanic activity.

Front

What is the role of water in shaping the Earth's surface?

Back

Water shapes the Earth's surface through processes like erosion, sediment transport, and deposition, creating features like valleys and deltas.

Front

What is a dune?

Back

A dune is a hill of sand formed by the wind, commonly found in deserts and along coastlines.

Front

What is volcanic activity?

Back

Volcanic activity refers to the eruption of magma from beneath the Earth's crust, which can create new landforms like mountains and islands.

Front

What is the difference between rapid and slow changes to Earth's surface?

Back

Rapid changes occur quickly, such as earthquakes and volcanic eruptions, while slow changes happen over long periods, like weathering and erosion.

Front

What is the process of sedimentation?

Back

Sedimentation is the process by which particles settle out of a fluid, forming layers of sediment, often seen in rivers and lakes.