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5th Grade > Erosion and Weathering > Flashcards

Erosion and Weathering Flashcards

1
Q

Ocean waves breaking up large rocks and shells into sand is an example of what?

A

Weathering

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2
Q

Large mountains becoming shorter over time is an example of what?

A

Weathering

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3
Q

What is the transport of weathered materials from one place to another called?

A

Erosion

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4
Q

Canyons, valleys, and cliffs are caused by what?

A

Erosion

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5
Q

When erosion is caused by glaciers, what happens the surface below?

A

The abrasion causes the surface to be polished or striated.

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6
Q

Which erodes faster? Beach sand or rocks?

A

Sand

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7
Q

How was the Grand Canyon formed?

A

Erosion by the Colorado River.

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8
Q

Why does removing plants from a field cause erosion?

A

Because the soil is no longer held in place by plant roots.

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9
Q

What is deposition?

A

When sediment begins to settle out of the water.

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10
Q

The FORMATION of sand dunes is an example of what?

A

Deposition

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11
Q

What can farmers do to keep soil in place to prevent erosion?

A

They can plant cover crops after harvesting.

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12
Q

What could help a hilly area that is experiencing erosion?

A

Planting trees

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13
Q

How do ocean currents build beaches?

A

By moving sand along the coast.

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14
Q

How are deltas built?

A

By the constructive force of sediment deposition

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15
Q

What do levees do?

A

The can help reduce flooding

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16
Q

When lava flows and cools, what happens?

A

A new land feature is formed by the constructive process of lava hardening

17
Q

How can you see the changes to Earth over time?

A

By comparing a very old map to a new map.

18
Q

What is one way people know if an area might flood?

A

A computer generated map can warn people of flood-prone areas.

19
Q

Why do rivers meander rather than go in a straight line?

A

Because flowing water erodes soil from one river bank and deposits soil onto the other.

20
Q

If you go swimming and notice that the water is shallow where the stream enters the lake and the sediment on the lake bottom is much deeper, what is the cause?

A

The deep sediment is caused by deposition

21
Q

What is a kind of polluted rain?

A

Acid rain

22
Q

If you pour regular water over limestone, and pour acid water over another piece of limestone, what would happen.

A

The acid water will break apart the limestone after a while.

5th Grade (1 decks)

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