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What is Weathering?

Select one:

a. The transportation of sediment by water, wind, ice or gravity.

b. The chemical or mechanical breakdown of rock into smaller components.

c. The force that is exerted on rock due to wind constantly blowing on it.

Question 2

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What is Erosion?

Select one:

a. The transportation of sediment by water, wind, ice or gravity.

b. The chemical or mechanical breakdown of rock into smaller components.

c. The force that is exerted on rock due to wind constantly blowing on it.

Question 3

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What climatic region would you expect to find the highest rates of weathering?

Select one:

a. Temperate mid-latitude region

b. Warm and wet (tropics/rain forest) region

c. Dry and hot (desert) region

Question 4

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Why did you choose the answer you did for question 3? Choose the best answer below:

Select one:

a. The heat in the tropics allows the chemical reactions of weathering to take place, while the wet conditions there speeds up the process of weathering.

b. Weathering happens the fastest when the climate is dry.

c. The wet conditions of the tropics allows the chemical reactions of weathering to take place at all, while the heat in this region speeds up the process of weathering.

d. Weathering happens the fastest with only moderate rates of rain and moderate temperatures.

Question 5

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What climatic region would you expect to find the lowest rates of weathering?

Select one:

a. Temperate mid-latitude region

b. Warm and wet (tropics/rain forest) region

c. Dry and hot (desert) region

Question 6

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Why did you choose the answer you did for question 5?

Select one:

a. With very little water present in a desert region, weathering will need to be slowest there as a result.

b. Heat alone is all that is needed for weathering to take place at a rapid rate, so the slowest rates of weathering would therefore need to be happening at the mid-latitudes.

c. Weathering happens the slowest with only moderate rates of rain and moderate temperatures, as in the mid-latitude region.

d. Weathering is slowest where the winds are the mildest, so the tropics would be where the slowest rates of weathering take place.

Question 7

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How does a shale differ from a sandstone?

Select one:

a. Shale is compacted mud-sized grains and sandstone is cemented sand-sized grains.

b. Sandstone is compacted mud-sized grains and shale is cemented sand-sized grains.

c. Shale is cemented mud-sized grains and sandstone is compacted sand-sized grains.

Question 8

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How does a conglomerate differ from a breccia?

Select one:

a. A conglomerate is a round rock and a breccia is an angular rock.

b. A conglomerate is made up of cemented rounded gravel-sized grains and a breccia is made up of cemented angular gravel-sized grains.

c. A breccia is made up of cemented rounded gravel-sized grains and a conglomerate is made up of cemented angular gravel-sized grains.

d. A conglomerate is an angular rock and a breccia is a round rock.

Question 9

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What mineral is limestone made from?

Select one:

a. Dolomite – CaMg(CO₂)₃

b. Olivine – (Mg, Fe)₂SiO₄

c. Calcite (CaCO₃)

 

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