Transcript weathering practice

Weathering, Erosion and
Deposition
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begin review.
What is the agent of
deposition in this picture?
A.
B.
C.
D.
River
Glacier
Wind
Gravity
That is not correct. Try again.
Glacier is correct. The glacier that is in the above picture
acts as a bulldozer breaking up and pushing rocks. When
the glacier melts, the pile of broken rock is deposited as
seen in the bottom picture.
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question.
What is the agent of
deposition in these
pictures?
A.
B.
C.
D.
Water
Glacier
Wind
Gravity
That is not correct. Try again.
Wind is correct. The sand dune on the left shows where
the wind has blown the sand into a pile. The top right
picture shows a sandstone rock face that was created by
sand deposited by the wind blowing the sand in different
directions.
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question.
How was this rock formed?
A.
B.
C.
D.
Water and wind
Glacier and wind
Water and gravity
Glacier and gravity
That is not correct. Try again.
Water and wind are correct. The fine sediment was eroded
by water or wind across the surface, creating ripple marks.
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question.
Conglomerate
What evidence do you see
that shows that these rocks
were weathered by running
water?
A. There are many rocks
B. The rocks are deposited on the left
in the above picture
C. The rocks are rounded
D. The rocks are cemented together in
the upper right picture
That is not correct. Try again.
The rocks are rounded by the running water carrying
small sediment and wearing away the outer part of the
rock.
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question.
What causes a dust storm?
A.
B.
C.
D.
wind
No vegetation
Wind and no vegetation
Thunderstorms
That is not correct. Try again.
A dust storm is caused by strong wind AND no
vegetation to hold down the soil.
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question.
What are the agents of erosion?
A.
B.
C.
D.
Water and wind
Glacier and wind
Water and gravity
Glacier and gravity
That is not correct. Try again.
Wind and water are correct--Layers of different types of
rock have been eroded at different rates because some
layers are softer than others. This is called differential
weathering.
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question.
What created the cavern in the
limestone to the left, the pits in
the limestone rock below left,
and the sinkhole in the
limestone below?
A.
B.
C.
D.
Mechanical weathering
Physical weathering
Chemical weathering
Abrasion
That is not correct. Try again.
Chemical weathering is correct--carbon dioxide in the
air dissolves in water making it slightly acidic. The acid
reacts with the limestone and creates pits and holes.
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question.
What evidence of erosion
do you see?
A. Dirt in moving water
B. Trees and grass growing on the
side
C. ground slumping due to undercut
bank
D. A and C
That is not correct. Try again.
On the left the water is very brown therefore carrying a lot
of dirt. When the river slows down the sediment will settle
out and deposit in a different location. On the right the
stream has undercut the bank, making it unable to support
the upper sediment. A section is slumping into the stream
channel. These sediments will be eroded away with the
next rise in stream level.
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question.
What do you notice
about the depositional
patterns in these two
pictures of
streamtables?
A. The sand forms a delta when it meets the
body of water
B. The sand piles up at the top
C. A channel is formed in the sand
D. The sand moves faster when it hits the
water at the bottom
That is not correct. Try again.
The sand from the upper part of the stream has eroded
away and is deposited at the bottom. This land feature
where the sediment deposits is called a delta.
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