Weathering, Erosion, And Soil Formation Question Preview (ID: 48543)


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

What type of mechanical weathering occurs when rock is worn away by the grinding action of other rock particles?
a) acid rain
b) oxidation
c) release of pressure
d) abrasion

What type of weathering breaks down rock by freezing and thawing?
a) ice wedging
b) root wedging
c) abrasion
d) acid rain

What kind of weathering causes the mineral composition of rocks to change?
a) chemical weathering
b) mechanical weathering
c) chemical AND mechanical weathering
d) none of the above

What type of climate causes the fastest weathering?
a) cold and dry
b) cold and wet
c) hot and dry
d) hot and wet

What important factors determine the rate at which weathering takes place?
a) the amount of exposed surface area
b) the climate where the rock is located
c) the type of rock (permable or impermeable)
d) all of the above

Soil formation begins with the weathering of exposed __________________.
a) topsoil
b) litter
c) bedrock
d) sand

When soil is high in humus it will have ______________________.
a) very few living organisms
b) high fertility
c) low fertility
d) a light color

When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of what?
a) litter
b) the B horizon
c) humus
d) bedrock

How do living organisms help the soil?
a) the mix the soil
b) they add spaces for air and water
c) they add nutrients to the soil
d) all of the above

What do decomposers do?
a) They remove nutrients from the soil
b) They breakdown the remains of dead plants and animals
c) They weather rocks into soil
d) They add litter to the soil

Why is soil an important natural resource?
a) All living things on land depend on soil for survival.
b) Soil has earthworms.
c) Soil has 2 horizons.
d) Humans need soil for some recipes.

Topsoil erosion is most often caused by these two things ____________________.
a) tornados and earthquakes
b) wind and water erosion
c) hurricanes and earthquakes
d) tsunamis and wind

What term describes the management of soil to prevent its destruction?
a) soil erosion
b) soil conservation
c) soil horizons
d) litter

The practice of plowing fields along the curves of a slope is called _______________.
a) conservation plowing
b) no till
c) contour plowing
d) all of the above

Ice wedging and root wedging are both examples of what type of weathering?
a) chemical weathering
b) mechanical weathering
c) all of the above
d) none of the above

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