Erosion Jeopardy
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Erosion Jeopardy. Created by:. Mildred. 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.

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Erosion Jeopardy

Created by:

Mildred


Final Jeopardy

Weathering

Erosion

Deposition

Left Overs

Left Unders

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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


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


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)


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)


At which location in the diagram is the stream velocity lowest?

Velocity is lowest at location D (the inside of a curve)


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


Explain why the rocks have eroded unevenly. agent of erosion is most likely responsible for the rocks appearance?

Differences in hardness (resistance). The softer rocks have eroded more than the harder ones.


DAILY DOUBLE agent of erosion is most likely responsible for the rocks appearance?


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)


According to the data, at which location was the gradient of the stream greatest?

At location C - the water velocity is greatest.


Which agent of erosion is responsible for the deposition of the cross section of sediment seen in the diagram?

Running Water


Which agent of erosion is responsible for the deposition of the sediment seen in the diagram?

Ice (glaciers)



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)


What kind of particles would most likely be deposited in the lake beyond the location of the clay deposits?

Colloids



Some rocks such as limestone are weathered by contact with acid. This kind of chemical weathering is known as.......

Carbonation


Name the 4 methods by which sediments are transported by running water.

Floatation, Suspension, Rolling (saltation) and in Solution.



Name 3 stream characteristics that can affect the rate of erosion.

Slope (gradient), Rate of discharge, Shape of the stream channel.


Sharp and angular rock fragments are found at the base of a vertical cliff. By what method of erosion were they transported there?

Gravity


Scratched and polished rock was probably eroded by vertical cliff. By what method of erosion were they transported there?

Glaciers



Name 3 factors that can affect the settling rate of particles in still water.

Size, Density, and Shape


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


FINAL JEOPARDY erosion and deposition.

Forgetaboudit!

?


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.


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