S6E5 Weathering Erosion Deposition 2023

Front

What is a delta?

Back

A delta is a triangular deposit of sediment that forms where a river meets a large body of water, such as an ocean or lake.

Front

What is erosion?

Back

Erosion is the process by which water, ice, wind, or gravity picks up and moves weathered rock and soil from one place to another.

Front

What is weathering?

Back

Weathering is the natural chemical or physical process that breaks down rock on Earth's surface.

Front

What do the terms 'break it, take it, drop it' refer to?

Back

These terms refer to the processes of weathering (breaking down), erosion (taking away), and deposition (dropping off) of sediments.

Front

What is deposition?

Back

Deposition is the dropping off and settling of sediments to the bottom of a lake, river, or other bodies of water.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breaking down of rocks, while erosion is the movement of those weathered materials from one location to another.

Front

What role does gravity play in erosion?

Back

Gravity helps to pull rocks and soil down slopes, contributing to erosion through processes like landslides.

Front

What are the two main types of weathering?

Back

The two main types of weathering are mechanical weathering (physical breakdown) and chemical weathering (chemical alteration of minerals).

Front

Can you give an example of mechanical weathering?

Back

An example of mechanical weathering is freeze-thaw action, where water seeps into cracks in rocks, freezes, expands, and eventually breaks the rock apart.

Front

What is an example of chemical weathering?

Back

An example of chemical weathering is the reaction of carbon dioxide with water to form carbonic acid, which can dissolve limestone.