Weathering/Soil Formation

Burrowing animals like earthworms, ants, and rabbits can cause:

• chemical weathering

• mechanical weathering

• differential weathering

• abrasion

What is erosion?

• process of breaking rock

• process by which sediment and material is transported from one location to another

• process by which sediment and material is deposited in a new location

• process that breaks down rock by physical means

The process by which rock is broken down as a result of a chemical reaction:

• chemical weathering

• mechanical weathering

• physical weathering

• differential weathering

The two major types of weathering are:

• differential and oxidation

• mechanical and chemical

• mechanical and differential

• chemical and differential

What is soil conservation?

• The dark, organic material formed in soil from the decayed remains of plants & animals.

• The layer of rock beneath the soil.    

• a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss.

• A loose mixture of rock fragments, organic material, water, & air that can support vegetation.   

What is soil?

• The dark, organic material formed in soil from the decayed remains of plants & animals.

• The layer of rock beneath the soil.   

• a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss.

• A loose mixture of rock fragments, organic material, water, & air that can support vegetation.   

What is bedrock?

• The dark, organic material formed in soil from the decayed remains of plants & animals.

• The layer of rock beneath the soil.   

• a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss.

• A loose mixture of rock fragments, organic material, water, & air that can support vegetation.   

What is humus?

• The dark, organic material formed in soil from the decayed remains of plants & animals.

• The layer of rock beneath the soil.   

• a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss.

• A loose mixture of rock fragments, organic material, water, & air that can support vegetation.   

This occurs when water seeps into cracks in rock and when the temperature drops, the water freezes & expands the rock:

• abrasion

• glaciers

• ice wedging

• soil horizon

Chemical weathering happens faster in:

• warmer, moist climates

• colder, moist climates

• warmer, dry climates

• colder, dry climates