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15
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Which is NOT true of mudflows?
it is an example of mass wasting of rock
it can occur in mountain canyons and valleys after heavy rai
it consists of debris with large amounts of water
it can occur on active volcanoes
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15
×
How do microorganisms help plants?
they provide plants with water
they provide plants with carbon dioxide
they provide plants with oxygen
they provide plants with nitrogen
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15
×
What is true of rockfalls but not rockslides?
rockfalls often take place in high mountains
a large mass of rock slides as a unit down a slope
rockfalls are an example of mass wasting of rock
individual blocks of rock drop suddenly down a slope
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15
×
Which is NOT a method of conserving soil?
desertification
contour planting
crop rrotation
windbreaks
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boom
Lose 50 points!
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magnet
Take 15 points!
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fairy
Take points!
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25
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baam
Lose 10 points!
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15
×
Which reacts with rain water to help dissolve rocks?
carbon dioxide
rust
water
oxygen
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15
×
Why is soil an important resource?
it helps create farms
helps plant growth, purifies water, and recycles nutrients
it is food for animals
it helps fill in space for development
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15
×
Which of the following is true of creep?
it happens too slowly to be seen
a type of mass movement that you are least likely to see
it always occurs at the same rate
it c\occurs faster when the soil is dry
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15
×
In dry regions, what can overgrazing and clearing of land for farming lead to?
crop rotation
desertification
tillage
plowing
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seesaw
Swap points!
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seesaw
Swap points!
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fairy
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banana
Go to last place!
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15
×
mass wasting
a sudden fast movement of rock and soil
the downhill movement of masses or rock and soil
when sediment is put in a new location
weathered particles are picked up and moved to another place
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15
×
Which is NOT a form of mechanical weathering?
pressure release
abrasion
dissolving
ice wedging
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15
×
What kind of terrain do landslides, rockslides, and mudflows all occur on?
flat land
mountainsides
canyons
volcanoes
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15
×
A lot of soil is dug up at construction sites. What can this lead to?
the soil is used to keep buildings in place
the soil is brought to farms to replace old soil
the soil is thrown out
the soil can go into rivers and lakes and cause flooding
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15
×
How do windbreaks help conserve soil?
they keep animals away
they stop wind from blowing away soil
they stop water from draining out
they block sunlight from destroying soil
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heart
Other team wins 25 points!
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rocket
Go to first place!
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fairy
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lifesaver
Give 10 points!
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