Earth Science Chapter 5 Test Review

In soils with distinct soil horizons, the topmost zone is the

Which of the following best describes a mudflow?

Igneous rock is exposed & outer layers of rock expand more than rock below causing exfoliation

Vertical section through soil showing its succession of horizons & underlying parent material

When a block of material moves downward along a curved surface, the process is called

A block of material moves suddenly along a flat, inclined surface, usually are fast moving

This is a layer of rock and mineral fragments

The downward movement of a block of material along a curved surface

This is caused by the expansion of freezing water in cracks and crevices

This soil has almost no organic matter-it is the soil of tropical rain forests

Slowest type of mass movement, only moves a few mm to a few cm a year

This is the breaking down and changing of rocks at or near Earth's surface

When slabs of outer rock break off in layers

Human activities that remove plants covering the soil cause soil erosion to

The longer soil has been forming the _______ it becomes.

When thin sheets of water move soil particles

Layer of soil has characteristics produced by chemical weathering &other soil forming processes

In which type of climate does chemical weathering occur most rapidly?

_____ factors would be temperature and moisture.

Are trenches of erosion

Organic matter in soil is also called

Movements of material containing a large amount of water which move downslope as a thick fluid

Rock characteristics are the amount of cracks and the _____________ of the rock

This occurs when rocks or rock fragments fall freely through the air

This is the most important agent of chemical weathering

This are tiny streams of erosion

Is the proportions of different particle sizes

The breaking down an changing of rocks at or near Earth's surface is called

Which of the following does NOT usually trigger mass movements?

A soil's texture is determined by its

This is the layer of soil that contains partially weathered parent material

Excessive soil erosion can cause ______ of sediment which can clog rivers

Which of the following is NOT a cause of mechanical weathering

Part of the regolith that supports the growth of plants