27.1 Flashcards

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1
Q

What is the difference between weathering and erosion?

A

weathering is the breakdown of materials, erosion is the removal of surface material.

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2
Q

When the slope of a river decreases what happens to rivers speed?

A

It also decreases.

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3
Q

What are small streams called that flow into larger rivers?

A

Tributaries.

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4
Q

What is the land area called that gathers water for a major river?

A

Drainage Basin.

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5
Q

What is the boundary called that separates distinct drainage basins?

A

Drainage divide.

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6
Q

As water flows downhill under the influence of gravity, water erodes earths surface creating____?

A

Channels.

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7
Q

What shape do young rivers carve on earths surface due to the fast movement?

A

V-shape.

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8
Q

What type of rivers are wide with smooth and gentle slopes?

A

Mature rivers.

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9
Q

When rivers flood and drop their sediment load what type of land form is created?

A

Flood-plains.

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10
Q

What is a fan shaped sediment deposit that forms at the mouth of a river?

A

Deltas.

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11
Q

What are ditributaries?

A

branching channels created by deltas.

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12
Q

What are the two types of glaciers?

A

Valley glaciers and continental glaciers.

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13
Q

Where do valley glaciers come from?

A

High mountainous regions.

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14
Q

Where do continental glaciers come from?

A

colder climates and occupy large land areas.

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15
Q

Where are the two continental glaciers located?

A

Greenland and Antarctica.

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16
Q

What is a cirque?

A

A bowl shaped basin.

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17
Q

What is a arete?

A

A long sharp ridge line that is formed between two valley glaciers.

18
Q

What is a horn in a mountainous region?

A

Sharpened peaks.

19
Q

What shape of valley do valley glaciers form?

A

U-shaped valleys.

20
Q

What are tributary glaciers?

A

Small glaciers that beat into large glaciers.

21
Q

What type of valleys do tributary glaciers form?

A

they create hanging valleys.

22
Q

on which side of the dune does erosion occur?

A

Windward side

23
Q

On which side does deposition occur?

A

Leeward side

24
Q

what is deflation?

A

the removal of small particles by wind, leaving heavier particles behind.

25
Q

What is desert pavement?

A

When small particles are removed, and this is the remaining surface.

26
Q

Due to wind what does the shape and sizes of land forms depend on?

A

Wind speed, time wind blows, and sediment supply

27
Q

what are three land forms created by wave erosion?

A

coastal cliffs, sea stacks, and sea arches.

28
Q

what are two land forms created from wave depsostion?

A

sand bars and sand spits.

29
Q

what are sand bars?

A

land forms that are parallel tot he shoreline.

30
Q

what are sand spit?

A

they are similar to sand bars except they curve back towards the land.

31
Q

what are some things that can trigger mass wasting?

A

snow, heavy rains, earthquakes, or human activity.

32
Q

What are some examples of mass wasting?

A

Rock slides, mud flows, and landslides.

33
Q

The process by which water enters Earth and becomes groundwater below the surface.

A

Infiltration

34
Q

The upper boundary of the saturated zone.

A

Water table.

35
Q

A rock unit that can transfer water through its pore space.

A

Aquifer

36
Q

The percentage of a materials total volume that is pore space.

A

porosity

37
Q

Th process of assigning an exact numerical age to an organism, an object, or event.

A

Absolute dating

38
Q

The process of placing objects or events in their proper order in time.

A

Relative dating

39
Q

States the laws of nature operate today as they have in the past.

A

Uniformitarianism

40
Q

States that in an undisturbed sequence of sedimentary rock layer, the youngest rocks will be at the top and the oldest rocks at the bottom.

A

Principle of superstition

41
Q

Gaps in the rock record during which either erosion occurred or deposition was absent.

A

Unconformitites

42
Q

Remains or traces of organisms found in the geologic rock record.

A

Fossils