created by: mildred $100 weatheringerosiondepositionleft oversleft unders $200 $300 $400 $500 $100...
TRANSCRIPT
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Created by: Mildred
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$100
Weathering Erosion Deposition Left Overs Left Unders
$200$300$400$500
$100$200$300$400$500
$100$200$300$400$500
$100$200$300$400$500
$100$200$300$400$500
Final Jeopardy
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The kind of weathering
shown in the diagram is known as
Frost action or Ice wedging
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Why does the powdered
limestone react with the acid at a greater rate than the larger rock?
It has a greater surface area in contact with the acid
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After several minutes of shaking mineral B has lost mass and become rounded while
mineral A is unaffected. Explain why.
Mineral A is harder (more resistant to abrasion) than mineral B
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Which of the following minerals would be altered most by contact with acid?
A) KAl3Si3O10(OH)2 B) (Fe,Mg)2SiO4
C) Fe3Al2Si3O12 D) CaCO3
C) CaCO3 (carbonate minerals react with acid while silicate
minerals do not)
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Fe3Al2Si3O12 because it is the hardest (most resistant) mineral.
(see page 16 reference tables)
The following minerals were placed in a container of water and shaken for 30
minutes. At the end of that time which mineral showed the least evidence of
weathering and WHY?
A) KAl3Si3O10(OH)2 B) (Fe,Mg)2SiO4
C) Fe3Al2Si3O12 D) CaCO3
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At which location in
the diagram is the
stream velocity lowest?
Velocity is lowest at location D (the inside of a curve)
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A rock, found in the desert, has a pitted surface. Which agent of erosion is most
likely responsible for the rocks appearance?
The rock has been pitted by sand moved by the
WIND
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Explain why the rocks have eroded unevenly.
Differences in hardness (resistance). The softer rocks have eroded more
than the harder ones.
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DAILY DAILY DOUBLEDOUBLE
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At which location (A through D) is the water velocity greatest and explain why
Velocity is greatest at B because it is farthest from the bottom and
sides (less friction)
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According to the data, at which location was the gradient of the stream greatest?
At location C - the water velocity is greatest.
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Which agent of erosion is
responsible for the deposition of the cross section of
sediment seen in the diagram?
Running Water
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Which agent of erosion is
responsible for the deposition
of the sediment seen in the diagram?
Ice (glaciers)
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At which location would
the smallest particles
probably be deposited?
Location D
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If the velocity of a stream decreased from 400 cm/sec to 50 cm/sec which particle(s)
would remain in suspension?
Sand, Silt, and Clay
(must name all to get money)
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What kind of particles would most likely be
deposited in the lake beyond the location of the clay deposits?
Colloids
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In what kind of climate does chemical weathering proceed at
the fastest rate?
Warm (hot) and Wet
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Some rocks such as limestone are weathered by contact with
acid. This kind of chemical weathering is known as.......
Carbonation
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Name the 4 methods by which sediments are transported by
running water.
Floatation, Suspension, Rolling (saltation) and in
Solution.
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What is the force that drives all erosion?
Gravity
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Name 3 stream characteristics that can affect the rate of
erosion.
Slope (gradient), Rate of discharge, Shape of the
stream channel.
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Sharp and angular rock fragments are found at the base
of a vertical cliff. By what method of erosion were they
transported there?
Gravity
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Scratched and polished rock was probably eroded by
Glaciers
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What term describes the granite rocks
depicted in the diagram?
Erratics
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Name 3 factors that can affect the settling rate of particles in
still water.
Size, Density, and Shape
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Name any 5 characteristics of regions shaped by glacial erosion and deposition.
1) Parallel grooves in rocks
2) U-shaped valleys
3) Scratched and polished rock
4) Erratics
5) Deep parallel lakes
6) Usorted, unconsolidated sediment
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FINAL JEOPARDY
?
Forgetaboudit!
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Raoul drops many balls into a column of water all at the same time. They settle to the bottom as shown in the diagram. Explain why this unexpected result occurred.
The smallest balls are the most dense and the largest balls are the
least dense.