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World Geography > 2.4 External Forces Shaping The Earth > Flashcards

2.4 External Forces Shaping The Earth Flashcards

1
Q

What is weathering

A

Physical and chemical processes that change the characteristics of rock on or near earths surface

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2
Q

What is mechanical weathering

A

IT DOESNT CHANGE COMPOSITION OF ROCKS, ONLY BREAKS IT INTO SMALLER PIECES

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3
Q

What is chemical weathering

A

OCCURS WHEN A ROCK IS CHANGED INTO A NEW SUBSTANCE DUE TO ELEMENTS

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4
Q

What is decomposition

A

When minerals react to oxygen in the air and begin to crumble

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5
Q

How is acid rain formed

A

When Sulfur and nitrogen oxide mix with water

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6
Q

Warm/moist climate

A

Chemical weathering

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7
Q

Cool/hot climate

A

Chemical weathering

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8
Q

What is erosion

A

When sediment is moved

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9
Q

3 types of water erosion

A
  1. Water flows in streams/river and moves sediment downstream
  2. Abrasion- the grinding of rocks by transported particles
  3. Water dissolves chemical elements in rock and changes rock composition
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10
Q

What is a delta

A

A fan like landforms where sediment is deposited when a river enter the ocean

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11
Q

What is the mph for wind to carry sediment

A

11 MPH

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12
Q

What are loesses

A

Wind blown silt and clay that produce fertile soil

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13
Q

Why does a glacier move

A

Because of gravity

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14
Q

How do glaciers move

A

Feom highest to lowest point on land

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15
Q

What is glaciation

A

The changing of landforms by slowly moving glaciers

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16
Q

What is moraine

A

Rocks left behind by a glacier forming a hill or ridge

17
Q

How are kettles formed

A

When blocks of ice melt slowly and leave dents/impressions in the earth

18
Q

5 soli factors

A
  1. Patent material- chemical composition of rock before it decomposes
  2. Relief- steep slopes font produce soil easily
  3. Organisms- decompose soil
  4. Climates- produce different soil
  5. Time- amount of time to make soil

World Geography (7 decks)

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