Weathering And Erosion: Question Preview (ID: 30516)

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Peanuts and soybeans(legumes) enrich the soil because they contain ________ -fixing bacteria in their roots.
a) oxygen b) carbon c) nitrogen d) argon
________ is the decomposed organic material found in soil.
a) hummus b) clay c) bedrock d) humus
__________ is the loose, weathered material on Earth's surface.
a) bedrock b) lichens c) soil d) mantle
_________ is the most important cause of chemical weathering.
a) wind b) pressure changes c) oxidation d) water
Which of these is chemical weathering?
a) water freezing in the cracks of rocks b) lichens produce weak acids that dissolve rock c) wind blows sand against rocks d) rocks crumbles after repeated expansion and shrinking
Plants roots can expand in existing cracks and split rocks open.
a) true b) false c) d)
_______ splits rock when water freezes and expands in existing cracks in rock.
a) ice wedging b) abrasion c) release of pressure d) oxidation
Processes that break down rock at Earth's surface.
a) erosion b) sublimation c) weathering d) revolution
The extreme loss of topsoil due to drought in the 1930's is called
a) Hurricane Andrew b) the Dust Bowl c) the Great Blizzard d) the Great Dirt Storm
To put nutrients back into the soil, farmers alternate between 2 crops. This is called
a) contour plowing b) conservation plowing c) crop rotation d) irrigation farming
Farmers can keep the old plant stalks on the field during the summer to keep the soil from blowing during the winter. This is called
a) conservation plowing b) crop rotation c) contour plowing d) hydroponic gardening
Material moved by erosion is called
a) deposition b) sediment c) a waterfall d) a cirque
Mass movement is erosion caused by
a) water b) wind c) glacier d) gravity
Water that does not evaporate or sink into the ground is referred to as
a) condensation b) hail c) runoff d) sublimation
A ________ is a stream or small river that flows into a larger river.
a) tributary b) flood plain c) kettle d) valley glacier
A meander is a _______ in the course of a river.
a) waterfall b) beach c) delta d) bend
Karst topography is associated with the presence of ______
a) waterfalls b) caves c) glaciers d) kettle lakes
_________ is scraping or scratching.
a) abrasion b) deflation c) plucking d) moraine
_______ is glacial till deposited at the front and side edges of a glacier.
a) delta b) sand dune c) moraine d) alluvial fan
______ is fine, wind-deposited sediment.
a) loess b) moraine c) delta d) hoodoo
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