Weathering and soil formation 1 +2

Front

The grinding away of rock by other rock particles carried in water, ice, or wind

Back

abraison

Front

Ice wedging causes mechanical weathering of rock by means of

Back

freezing and thawing of water.

Front

The growth of plant roots and animal activity may result in

Back

mechanical weathering

Front

What kind of weathering causes the mineral composition of rocks to change?

Back

chemical weathering

Front

A rock containing iron becomes soft and crumbly and reddish-brown in color. It probably has been chemically weathered by

Back

oxygen

Front

A hot and wet climate causes weathering to take place

Back

rapidly

Front

The most important factors in determining the rate of weathering are

Back

rock type and climate

Front

Rock that is permeable weathers easily because it is

Back

full of tiny, connected air spaces

Front

Soil formation starts with the weathering of

Back

rock

Front

Mixture of rock particles, minerals, decayed organic material, air, and water

Back

soil