Weathering, Erosion and Deposition Click to begin review.

What is the agent of deposition in this picture? River Glacier Wind Gravity

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Click to go to next question. Glacier is correct. The glacier that is in the above picture acts as a bulldozer breaking up and pushing rocks. When the glacier melts, the pile of broken rock is deposited as seen in the bottom picture. Click to go to next question.

What is the agent of deposition in these pictures? Water Glacier Wind Gravity

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Click to go to next question. Wind is correct. The sand dune on the left shows where the wind has blown the sand into a pile. The top right picture shows a sandstone rock face that was created by sand deposited by the wind blowing the sand in different directions. Click to go to next question.

How was this rock formed? Water and wind Glacier and wind Water and gravity Glacier and gravity

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Click to go to next question. Water and wind are correct. The fine sediment was eroded by water or wind across the surface, creating ripple marks. Click to go to next question.

Conglomerate What evidence do you see that shows that these rocks were weathered by running water? There are many rocks The rocks are deposited on the left in the above picture The rocks are rounded The rocks are cemented together in the upper right picture

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Click to go to next question. The rocks are rounded by the running water carrying small sediment and wearing away the outer part of the rock. Click to go to next question.

What causes a dust storm? wind No vegetation Wind and no vegetation Thunderstorms

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Click to go to next question. A dust storm is caused by strong wind AND no vegetation to hold down the soil. Click to go to next question.

What are the agents of erosion? Water and wind Glacier and wind Water and gravity Glacier and gravity

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Click to go to next question. Wind and water are correct--Layers of different types of rock have been eroded at different rates because some layers are softer than others. This is called differential weathering. Click to go to next question.

What created the cavern in the limestone to the left, the pits in the limestone rock below left, and the sinkhole in the limestone below? Mechanical weathering Physical weathering Chemical weathering Abrasion

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Click to go to next question. Chemical weathering is correct--carbon dioxide in the air dissolves in water making it slightly acidic. The acid reacts with the limestone and creates pits and holes. Click to go to next question.

Dirt in moving water Trees and grass growing on the side ground slumping due to undercut bank A and C What evidence of erosion do you see?

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Click to go to next question. On the left the water is very brown therefore carrying a lot of dirt. When the river slows down the sediment will settle out and deposit in a different location. On the right the stream has undercut the bank, making it unable to support the upper sediment. A section is slumping into the stream channel. These sediments will be eroded away with the next rise in stream level. Click to go to next question.

What do you notice about the depositional patterns in these two pictures of streamtables? The sand forms a delta when it meets the body of water The sand piles up at the top A channel is formed in the sand The sand moves faster when it hits the water at the bottom

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The sand from the upper part of the stream has eroded away and is deposited at the bottom. This land feature where the sediment deposits is called a delta. Click to end the quiz