Chapter 5

Weathering and Soil Formation

A broad type of weathering that causes smooth and rounded edges.

Mechanical

Large movement of loose rocks and soil.

Landslide

The byproduct of burning coal, when mixed with precipitation, it is called?

Sulfuric Acid

Type of soil that remains on top of the parent rock.

Residual Soil

Soil that has three horizons is called?

Mature

Which horizon is made up of partly weathered rock.

C Horizon

A specific type of weathering caused by the wearing away of rocks by wind,

water, or other forces.

Abrasion

A specific type of mechanical weathering caused by plants

Root-pry

Weathering that changes the internal composition of rocks.

Chemical

Curved sheets or slabs parallel to a rocks surface due to weathering.

Exfoliation

This substance can cause chemical weathering when combined with

other things.

Water

Composed of minerals that resist chemical weathering.

Stable Rock

Formed by decaying organic material.

Humus

Cross section of soil horizons is called.

Soil Profile

Leached-out minerals and clay are present in this horizon.

B Horizon

Space between soil particles.

Pore Spaces

Two main ingredients of soil.

Weathered Rock

Organic Material

4 sizes of rocks within the soil .

Gravel

Sand

Silt

Clay

4 conditions to develop soil horizons.

Time

Climate

Types of Rock

Surface Features