Unit 5: Weathering and Erosion

Front

What is creep in the context of weathering and erosion?

Back

Creep is the slow, downhill movement of rock and soil that causes fixed objects like trees and fence posts to lean downhill.

Front

Which process is NOT a type of chemical weathering?

Back

Ice wedging is NOT a type of chemical weathering; it is a physical weathering process.

Front

Why does sand not hold water well?

Back

Sand does not hold water well because its large particles allow water to flow through quickly.

Front

What causes gravestones to break down and turn blackish?

Back

The action of acid rain causes gravestones to slowly break down and turn a blackish color.

Front

What is erosion?

Back

Erosion is the process of wind, water, or ice transporting soil and rock from one location to another.

Front

Define weathering.

Back

Weathering is the process of breaking down rocks and minerals into smaller pieces through physical or chemical means.

Front

What is mechanical weathering?

Back

Mechanical weathering is the physical breakdown of rocks into smaller pieces without changing their chemical composition.

Front

Give 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.

Front

What role do living organisms play in weathering?

Back

Living organisms can secrete acids that break down rocks, contributing to chemical weathering.

Front

What is the difference between weathering and erosion?

Back

Weathering is the breakdown of rocks, while erosion is the movement of those broken materials from one place to another.