Chapter 7 Weathering, Erosion, and Soil | Baamboozle - Baamboozle

Contrast mechanical weathering and chemical weathering. Give an example of both.

Mechanical changes physical appearance and chemical changes composition. Example frost wedging for mechanical and oxidation for chemical

Why is water an important agent in chemical weathering?

It can dissolve many kinds of minerals and rocks and serves as a medium for many reactions to occur.

What is oxidation?

A chemical reaction between oxygen and another substance

What role does surface area play on weathering?

The more surface area the more weathering can occur

True or false: Wind can work against gravity?

True

What area would wind be a major erosional agent.

desert

In the northern hemisphere, what side of the hill sees more sunlight?

South

How does slope effect erosion?

Material can move down a slope and expose more rock more quickly.

How do living things impact weathering and erosion?

Trees may break up rock, humans move soil when building, animals burrow holes

What is acid rain?

A rain that has a pH below 5.6

What climate does mechanical weathering happen best in?

Cool and dry

What happens when a river enters a larger body of water.

The water slows down and deposits large amounts of sediment

What is the O horizon composed of?

Leaf litter and humus

How does climate influence the rate of weathering?

Different types of weathering occurs better in different regions. Water is a major agent of erosion so more precipitation can increase weathering.

How would you classify soil that is 60% sand, 30% silt, and 10% clay?

Sandy Loam

What is the difference between reel erosion and gully erosion?

Reel erosion is small channels cut by running water down a slope while gully erosion forms trenches

This process strips the outer layer of rock away.

Exfoliation

Breakdown of rock into smaller pieces.

Weathering

This is a vertical sequence of soil layers

Soil Profile