Geosphere- Extreme Events Flashcards Preview

GEO1213: Our Changing Planet > Geosphere- Extreme Events > Flashcards

Flashcards in Geosphere- Extreme Events Deck (6)
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1
Q

What is uniformitarianism

A

The present is key to the past

2
Q

What is gradualism

A

The earth has evolved slowly over a very long period of time

3
Q

What is catastrophism

A

Many landforms are a product of extreme events

4
Q

Landslide sediment flux =

A

Magnitude x frequency

5
Q

What was the response of the river channel after the Mount St. Helens eruption

A

Initial aggradation
Incision and widening
Bed armouring

6
Q

What determines how long a landform persists for

A

The frequency of them occurring relative to the time it takes for their effects to be removed by other processes