Erosion Jeopardy

1
Erosion Jeopardy

Created by
Mildred
2
Final Jeopardy
Weathering
Erosion
Deposition
Left Overs
Left Unders
100
100
100
100
100
200
200
200
200
200
300
300
300
300
300
400
400
400
400
400
500
500
500
500
500
3
The kind of weathering shown in the diagram is
known as
Frost action or Ice wedging
4
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
5
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
6
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)
7
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
Fe3Al2Si3O12 because it is the hardest (most
resistant) mineral. (see page 16 reference tables)
8
At which location in the diagram is the stream
velocity lowest?
Velocity is lowest at location D (the inside of a
curve)
9
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
10
Explain why the rocks have eroded unevenly.
Differences in hardness (resistance). The softer
rocks have eroded more than the harder ones.
11
DAILY DOUBLE
12
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)
13
According to the data, at which location was the
gradient of the stream greatest?
At location C - the water velocity is greatest.
14
Which agent of erosion is responsible for the
deposition of the cross section of sediment seen
in the diagram?
Running Water
15
Which agent of erosion is responsible for the
deposition of the sediment seen in the diagram?
Ice (glaciers)
16
At which location would the smallest particles
probably be deposited?
Location D
17
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)
18
What kind of particles would most likely be
deposited in the lake beyond the location of the
clay deposits?
Colloids
19
In what kind of climate does chemical weathering
proceed at the fastest rate?
Warm (hot) and Wet
20
Some rocks such as limestone are weathered by
contact with acid. This kind of chemical
weathering is known as.......
Carbonation
21
Name the 4 methods by which sediments are
transported by running water.
Floatation, Suspension, Rolling (saltation) and
in Solution.
22
What is the force that drives all erosion?
Gravity
23
Name 3 stream characteristics that can affect the
rate of erosion.
Slope (gradient), Rate of discharge, Shape of the
stream channel.
24
Sharp and angular rock fragments are found at the
base of a vertical cliff. By what method of
erosion were they transported there?
Gravity
25
Scratched and polished rock was probably eroded by
Glaciers
26
What term describes the granite rocks depicted in
the diagram?
Erratics
27
Name 3 factors that can affect the settling rate
of particles in still water.
Size, Density, and Shape
28
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
29
FINAL JEOPARDY
Forgetaboudit!
?
30
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.