Weathering And Soil Formation Question Preview (ID: 33839)


Weathering And Soil Formation. TEACHERS: click here for quick copy question ID numbers.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is called
a) erosion.
b) abrasion.
c) cracking and peeling.
d)

Ice wedging causes mechanical weathering of rock by means of
a) heating and cooling.
b) plant growth.
c) freezing and thawing of water.
d)

What kind of weathering causes the mineral composition of rocks to change?
a) mechanical weathering
b) permeable weathering
c) chemical weathering
d)

A hot and wet climate causes weathering to take place
a) rapidly.
b) slowly.
c) at the same rate as when the climate is dry and cool.
d)

Soil formation begins with the weathering of
a) litter.
b) bedrock.
c) the A horizon.
d)

Soil that is rich in humus has high
a) fertility.
b) water content.
c) sand content.
d)

Living organisms in soil help to
a) slow the rate of soil formation.
b) build up the C horizon.
c) mix the soil and make humus.
d)

Decomposers are the soil organisms that
a) store moisture in the soil.
b) burrow deep below the topsoil.
c) break down and digest the remains of dead organisms.
d)

How long did it take for the thick, fertile soil of the North American prairies to develop?
a) several years
b) thousands of years
c) hundreds of years
d)

What term describes the management of soil to prevent its destruction?
a) soil exhaustion
b) soil decomposition
c) soil conservation
d)

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