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memorize.ai (lvl 286)

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Why is loess a very valuable resource?

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4 years ago

Date created

Mar 1, 2020

Cards (33)

Section 1

(33 cards)

Why is loess a very valuable resource?

Front

It is rich in minerals

Back

How can erosion by groundwater create a landform?

Front

Slightly acidic water dissolves certain rocks underground to form a cavern.

Back

the process by which sediment and other materials are moved from one place to another.

Front

Erosion

Back

Very fine sediments called ______ can be carried by wind over long distances

Front

loess

Back

Which causes more erosion - a rill or a river? Why?

Front

River - It has more water moving through the channel.

Back

What force is mainly responsible for the erosion and deposition that happens in landslides, rockfalls, and mudslides?

Front

gravity

Back

What term best describes the movement of soil from one place to another?

Front

erosion

Back

Sediment is deposited as a fast-flowing river reaches a flatter area of land. This forms a(n)

Front

alluvial fan.

Back

What is the term for the place where land and a body of water meet?

Front

shoreline

Back

Where do deltas form?

Front

as a stream enters an ocean

Back

Streams alter the shape of Earth's surface Caused by erosion: Caused by deposition:

Front

erosion: caves, sinkholes deposition: stalactites, stalagmites

Back

How does a U-shaped valley formed?

Front

A glacier (most likely alpine) pushes through a v-shaped valley, originally formed by a stream. The glacier erodes the bottom and sides of the valley.

Back

When a river periodically floods and deposits its sediments, a flat area known as a _________ forms over time.

Front

floodplain

Back

What does an oxbow lake look like?

Front

a lake in the shape of a comma (a meander that was cut off)

Back

What most likely caused a narrow and steep valley to first form?

Front

running water

Back

What is groundwater?

Front

water below Earth's surface

Back

When an obstacle causes wind to slow down and deposit materials, the materials pile up and eventually form a(n)

Front

dune

Back

What is a type of chemical weathering the results from precipitation with a low pH?

Front

acid rain

Back

Which type of sediment will be dropped first as wind slows?

Front

the heaviest

Back

Which landform was most likely present before a sinkhole formed?

Front

cave

Back

Types of FAST mass movement are

Front

landslides, mudslides, rockfall

Back

A type of SLOW mass movement is

Front

creep

Back

When glaciers retreat, they leave behind huge blocks of ice. When these ice blocks melt, they can form kettle lakes. Why is it important for sediment to build up around the ice blocks in order for kettle lakes to form?

Front

Without the sediment built up, the water would not collect in one space.

Back

What occurs when materials drop out of wind or water?

Front

deposition

Back

What happens when a stream slows down?

Front

the stream deposits sediment

Back

When a river flows into an ocean, it slows down and deposits materials in its

Front

delta

Back

Which agent of erosion and deposition is most likely responsible for the formation of the sand dunes?

Front

wind

Back

Large masses of flowing ice called ______are typically found near Earth's poles and in other cold regions.

Front

glaciers

Back

How does the slope affect the speed of a rivers? What does this do to the amount of erosion?

Front

Steeper slopes increase the speed of water, which increases the amount of erosion.

Back

The fan-shaped mass of sediment deposited by a stream into an ocean or a lake is called a(n)

Front

delta

Back

Which stream has a higher rate of erosion, one carrying sand or one carrying pebbles and rocks?

Front

One carrying pebbles and rocks

Back

The rock material deposited by glaciers as they melt and retreat is called

Front

glacial drift.

Back

How would you describe the landscape made by alpine glaciers compared to the landscape made by continental glaciers?

Front

Alpine glaciers create rugged landscapes, and continental glaciers create smooth landscapes.

Back