Weathering, Erosion, Deposition Study Guide

The breakdown of rock material into smaller piece.

Mechanical weathering changes the size and shape of the substance. Chemical weathering produces a new substance.

Break down

the movement/transport of sediments.

the putting down sediments.

1. Abrasion 2. Frost Action (ice wedging) 3. Plants 4. Animals

When water infiltrates (permeates) into the ground gettimg into the cracks of rocks, it freezes. When water freezes, it expands. This will eventually widen the crack and making the rock weaker to fall apart.

1. Oxidation (oxygen) 2. Water (hydrolysis) 3. Plants 4. Animals 5. Acid Rain

1. Surface area 2. Type of climate 3. Type of rock

The end product of weathering is soil formation.

Top soil supports plant growth and is also the layer that contains the greatest amount of nutrients.

The five agents of erosion (able to transport weathered materials) are... 1. Mass movement 2. Running water 3. Glaciers 4. Wind 5. Waves

Constructive forces build up land through the process of deposition. Destructive forces break down land through the process of weathering.

Groundwater.

A meander is any curve or bend in a river or stream.

The outer curve of a meander experiences a greater water velocity which allows more weathering and erosion to occur (destructive forces).

The inside curves on a meander cause the water velocity to decrease and therefore sediments are deposited (constructive force).

Glaciers occur during ice ages when the average temperatures are below freezing.

physical/mechanical weathering.

frost action /ice wedging.

The sediments left behind afer a glacier melts is called till.

Wind breaks downs rock through the process of physical/mechanical weathering.

This wind blown process is called deflation.

Sand dunes.

Waves are always involved with the process of mechanical/physical weathering.

Wave deposition results in beaches.

River valleys are always shaped like a "V". Glacial valleys are always shaped like a "U"

Particles transported by running water are always round and smooth. The edges of irregular shaped rock chip away and they bound and grind away on other rock as they are transported.

Weathering because it breaks down land.

Deposition because it builds up land.