Gen Sci Ch 34 Question Preview (ID: 34940)


Weathering.

A sheet of material that slips and slides downslope is a
a) rock fall
b) landslide
c) mudflow
d) creep

Ice wedging is a form of chemical weathering.
a) True
b) False
c)
d)

Glacial erosion due to rocky debris scratching the rocks the glacier travels by is called
a) plucking
b) abrasion
c) sanding
d) tillage

When heavy rains or snowmelts mix with soil to create mud that is carried downhill, a ___ occurs.
a) landslide
b) rock fall
c) mudflow
d) creep

Alpine glaciers are huge sheets of thick ice that cover many square miles.
a) True
b) False
c)
d)

The disintegration or decomposition of rock at or near Earth's surface is called
a) weathering
b) erosion
c) deposition
d) wedging

Large sediments moved downstream by bouncing and dragging along the streambed are part of the
a) dissolved load
b) suspended load
c) bed load
d) heavy load

The characteristic of a stream that describes how quickly the water in it moves at a given point is called speed.
a) True
b) False
c)
d)

The more plant material an area has, the greater the chance of erosion.
a) True
b) False
c)
d)

Mechanical and chemical weathering cannot work together.
a) True
b) False
c)
d)

The source region of a stream is called its
a) headwaters
b) stream channel
c) V-shaped valley
d) none of the above

The sediment deposited directly from the melting of glacial ice is called
a) rocks
b) gruel
c) till
d) sludge

Creep is often the result of alternative freezing and thawing.
a) True
b) False
c)
d)

The process of laying down eroded materials in new locations is called…
a) erosion
b) weathering
c) tillage
d) deposition

The slope of a stream, or the change in its elevation over a particular distance, is called a stream’s ….
a) discharge
b) speed
c) gradient
d) load

An accumulation of sediment deposited in layers or ridges by a glacier is called a….
a) moraine
b) till
c) sediment
d) glacial hill

What type of weathering changes the mineral composition of rocks?
a) chemical
b) mechanical
c)
d)

A curve in a stream is called a
a) delta
b) headwater
c) meander
d) sea arch

Why do glaciers move?
a) Ice crystals slip past one another
b) weight melts its base and makes it slippery.
c) both.
d)

The steeper the hill, the more likely mass movement will occur.
a) True
b) False
c)
d)

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