Geology: Erosion and Weathering Quiz

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Questions and Answers

What happens to the surface area when a rock is cleaved three times?

Decrease the surface area
Approximately quadruple the surface area
Increase the surface area (correct)
Approximately halve the surface area
Approximately double the surface area (correct)

Match the following weathering processes to their types:

Root wedging = Physical Weathering Frost wedging = Physical Weathering Abrasion = Physical Weathering Dissolution = Chemical Weathering Oxidation = Chemical Weathering Hydrolysis = Chemical Weathering

As rocks are weathered by moving water, what happens to the individual grains?

Grains become smaller and more rounded

The order of sediment classification from smallest to largest is: clay, ___, sand, pebbles, cobbles, boulders.

silt Signup and view all the answers

What is the order of the images of a desert landscape from least eroded to most eroded?

The ones that are fully filled to the top with sand is the first, slightly lower is the second, less sand is the third, and the last one is the least amount of sand. Signup and view all the answers

Which features are more common in downcutting river systems?

Waterfalls (A) Signup and view all the answers

In the image provided, select the part where erosion is most common in a river's course.

Towards the plane of longitudinal profile Signup and view all the answers

Select the images that were predominately created by wind erosion.

Black rock, yardang, multiple hills split in the middle, individual rocks, and hills straight down next to water. Signup and view all the answers

Strong rocks like thickly bedded sandstones tend to form _, whereas weaker rocks like thinly bedded shales tend to form gentler _.

cliffs, slopes Signup and view all the answers

Label the image of a yardang with the appropriate terms:

On top = Strong rocks and sandstone On the bottom = Weak rocks and shale Signup and view all the answers

Which units are made of rocks that are resistant to weathering in the desert?

Third unit (A), Eleventh unit (B), Eighth unit (C), Ninth unit (D), First unit (E) Signup and view all the answers

Where would you expect to find shale in the Grand Canyon image?

The first two on the left side Signup and view all the answers

What are the three most likely causes of erosion of the barrier island?

Strength and direction of ocean currents (B), Increase in storm frequency and/or strength (C), Increased strength of wave activity (E) Signup and view all the answers

What was the rate of coastal retreat from 1993 to 2012 in meters/year?

14 meters/year Signup and view all the answers

What was the annual rate of coastline retreat between 2012 and 2017?

220 meters/year Signup and view all the answers

Based on the erosion rate, how long will it be until your family home is lost to the ocean?

A little over three and a half years Signup and view all the answers

Which techniques could be employed to try to extend the amount of time the home would be livable?

Build a groin (A), If the home is damaged or destroyed, use the insurance money to build further inland (C), Add sand to the shoreline through beach nourishment (D), Build a seawall (E) Signup and view all the answers

Flashcards

Physical Weathering

The breakdown of rocks due to physical forces, like freezing and thawing, or plant roots pushing through cracks.

Chemical Weathering

Chemical reactions that break down rocks, like dissolving minerals in water or oxidizing iron in rocks.