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Geography😄😄🌍 2nd Year- by me > Chapter 7- Mass Movement > Flashcards

Chapter 7- Mass Movement Flashcards

1
Q

What is regolith?

A

Loose earth materials

E.g. Rock, soil, mud

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2
Q

What is mass movement?

A

The movement of loose earth materials down a slope by gravity

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5
Q

What are the 4 cause of mass movement?

A

Slope
Weather
Lack of vegetation
People

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6
Q

What are the types of mass movement?

A 
SLOW- soil creep
FAST
-landslides
-cliff falls
-bog bursts 
-mudflows
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7
Q

What are the causes of soil creep?

A

Water

Gravity

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8
Q

What occurs during soil creep?

A

Soil moves slowly downhill

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9
Q

What are the effects of soil creep?

A

Fences and trees bend downhill
Terracettes are formed
Walls collapse

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10
Q

Is soil creeper faster at the surface or deeper down?

A

Surface

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11
Q

What are the cause of landslides?

A

Undercutting
Coastal erosion
Earthquakes
Heavy rain

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12
Q

What occurs during a landslide?

A

Rapid movement of loose rock and soil down a slope

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13
Q

What are the effects of landslides?

A

Buildings are buried
People are killed
Roads are blocked making it difficult to send help

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14
Q

What are the causes of bug bursts?

A

Bog loosened by heavy rainfall

Work on mountain top wind turbines

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15
Q

What occurs during bog bursts?

A

Fast movements of bog down a slope

Like a river of turf/peat

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16
Q

What are the effects of bog bursts?

A

Destroys houses, roads and land

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17
Q

What are the causes of mudflows?

A

Rainfall

Volcanic activity -lava melts snow forming lahar

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18
Q

What occurs during mudflow?

A

Fast movements of mud down a slope

19
Q

What is a lahar?

A

A mudflow caused by volcanic activity

20
Q

Name an example of a lahar

A

Nevado Del Ruiz, Columbia 1985

21
Q

What are the causes of cliff collapse?

A

Undercutting by waves

22
Q

What occurs during cliff collapse?

A

Cliffs are weakened by waves

They collapse into the sea

Geography😄😄🌍 2nd Year- by me (12 decks)

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