Ch 5 Review Ppt

8/13/2019 Ch 5 Review Ppt

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Ch 5 review


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Weathering, Soil, and Mass

Movements


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5.1

The process that occurs when physical forces

break rock into smaller pieces without

changing the rocks chemical composition is

called ____.

a. differential weathering

b. chemical weathering

c. mechanical weathering

d. erosion


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5.1

Which of the following is NOT associated with

mechanical weathering?

a. frost wedging

b. unloading

c. biological activityd. reactions with oxygen


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5.1

Which of the following weathering processes

involves the constant freezing and thawing of

water?

a. unloading

b. frost wedgingc. exfoliation

d. spheroidal weathering


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5.1

When water freezes, its volume ____.

a. decreases slightlyb. increases

c. stays the same

d. decreases greatly


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5.1

Which of the following is NOT related to

chemical weathering?

a. frost wedging

b. dissolution

c. reactions with oxygend. reactions with water


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5.1

What type of

weathering has

occurred here?

BiologicalActivity


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5.1

Chemical weathering would be ____.

a. most effective in a warm, dry climateb. most effective in a cold, dry climate

c. most effective in a warm, humid climate

d. equally effective in any climate


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5.1

The gradual rounding of the corners and edges

of angular blocks of rock is called ____.

a. exfoliation

b. unloading

c. spheroidal weatheringd. mechanical weathering


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5.1

Whenever the characteristics and chemical

composition of weathered materials have

been altered, they have undergone ____.

a. chemical weathering

b. mechanical weathering

c. mass movement

d. frost wedging


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5.1

Which of these factors affects the rate of

weathering?

a. climate

b. chemical composition of the exposed rock

c. surface area of the exposed rockd. all of the above


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5.1

What factor has the greatest

influence on rate of weathering?

Climate


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5.2

Which of the following is NOT a major

component of soil?

a. mineral matter

b. air

c. humusd. earthworms


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5.2

What is this?

A Soil Profile


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5.2

What horizon is the

topsoil?

A. A horizon

B. B horizon

C. C Horizon


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5.2

What horizon is the

bedrock?

A. A horizon

B. B horizon

C. C Horizon


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5.2

The bottom horizon in a soil profile consists of

what?

A. Topsoil

B. Clay

C. Humus D. Unweathered parent material


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5.2

The main source of organic matter in soil is

____.

a. water

b. plants

c. fungid. bacteria


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5.2

Which of the following human activities has

caused an increase in soil erosion?

a. clear-cut logging

b. clearing land for construction

c. plowing land for farmingd. all of the above


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5.2

What type of

soil conservation

technique isshown here?

Terracing


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5.2

What type of

soil conservation

technique isshown here?

Wind Break


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5.2

What is the name for the rock that breaks

down to form a soils mineral matter?

A. Mother rock

B. Parent Material

C. Soil Source D. Regolith


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5.2

A soils texture is determined by ____.

a. mineral compositionb. type of humus

c. water content

d. particle size


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Soil Texture Triangle


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5.3

Which of the following is NOT true about mass

movements?

a. Some mass movements are too slow to be seen.

b. Mass movements always lead to landslides

c. Gravity is the driving force behind all mass

movements.

d. Mass movements are always downslope.


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5.3

What factor commonly triggers mass

movements?

a. saturation of surface materials with water

b. earthquakes

c. removal of vegetationd. all of the above


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5.3

The process responsible for moving material

downslope under the influence of gravity is

called ____.

a. erosion

b. weathering

c. mass movement

d. soil formation


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5.3

What type of mass

movement is

evidenced by trees

like those picturedhere?


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5.3

Why can the removal of vegetation trigger

mass movements?

a. The soil loses nutrients and begins to crumble.

b. The plant roots bind the soil and regolith

together.

c. The shaking triggers mass movements.

d. The plant roots lubricate the loose sediment.


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5.3

What type of

Mass Movement

is shown in thispicture?

Rockfall


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5.3

During what season would you expect mass

movements to be a greater threat?

a. a dry summer

b. a wet spring before vegetation is growing

c. a wet spring with lots of growing vegetationd. a dry autumn after the leaves have turned


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What type of Mass Movement is

depicted here?


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5.3

What causes creep (the slowest form of mass

movement) to occur?

A. Earthquakes

B. the freezing and thawing of the ground

C. hobbits


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Ch 5 Review Ppt

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