Chapter 6 Weathering Question Preview (ID: 22123)

Chapter 6 Test Review: Weathering.

Living organisms can help soil to
a) slow the rate of soil formation
b) bulid up the C horizon
c) mix the soil
d) prevent the formation of humus

What are the 2 most important factors in determining the rate of weathering
a) carbon dioxide and acid rain
b) abrasion adn acids from plant roots
c) animal actions and oxygen
d) rock type and climate

Climates that are both hot and wet cause weathering to take place
a) slowly
b) unevenly
c) quickly
d) at the same rate as in climates that are cool and dry

The mineral compostion of rocks change during
a) mechanical weathering
b) chemical weathering
c) mechanical and chemical weathering
d) general weathering

Ice wedging causes mechanical weathering by
a) heating and cooling
b) plant growth
c) animal actions
d) freezing and thawing

What principles states that the same process operating today operated in the past?
a) mechanical weathering
b) chemical weathering
c) uniformitariansim
d) soil conservation

What layer of soil would you find humus rich loam in?
a) A horizon
b) B horizon
c) C horizon
d) bedrock

Most of the work of mixing humus is done by
a) ants
b) worms
c) bacteria
d) fungi

A permeable rock will easily weather because
a) it is made up very small particles
b) it contains small airspaces (holes)
c) it is made up of only one type of mineral
d) it is made up of many different mineral types

The management of soil to prevent its destruciton is
a) soil exhaustion
b) soil decompostion
c) soil conservation
d) soil fertility

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