Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Geography > Tectonics > Flashcards

Tectonics Flashcards

You may prefer our related Brainscape-certified flashcards:
U.S. Geography flashcards World Geography flashcards
1
Q

What is the Asthenosphere?

A

The upper mantle layer of the Earth. It is approximately 2000km wide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the lithosphere?

A

The rigid outer part of the Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define Continental Crust

A

Crust that forms the continents of the lithosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define Continental Drift

A

The movement of tectonic plates due to varying weights of crust.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are convection currents?

A

The circulation of magma within the mantle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Define the epicentre

A

The point on the surface of an earthquakes origin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the hazard mitigation cycle?

A

The four stages are preparedness, response, recovery and mitigation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Define a hot spot

A

Volcanoes found away from the plate boundary due to a magma plume closer to the surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Define a magma plume

A

An area of hot, upwelling mantle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a Lahar?

A

A flow of mud and debris

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is oceanic crust?

A

Crust that is usually thinner than continental crust that forms the sea floor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Park’s model?

A

A model describing the decline and recovery of a country over time after a natural disaster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are primary waves?

A

An earthquake wave causing compressions within the body of rock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is pyroclastic flow?

A

A mixture of gas and rock fragments at high temperatures and travelling at high speeds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the Richter scale?

A

Measures the intensity of an earthquake

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are secondary waves?

A

An earthquake causing vertical displacement within the body of rock

17
Q

What are seismic waves?

A

The energy released during an earthquake in the form of primary and secondary waves

18
Q

What is slab pull?

A

The force contributing to the movement of tectonic plates.

19
Q

What is subduction?

A

When the oceanic plate is forced below the continental plate due to the oceanic plate being more dense than the continental plate

20
Q

What is the Benioff zone?

A

A region of subduction where most destructive margin earthquakes originate

21
Q

CASE STUDY-Haiti

A 
Magnitude 7
2010
9000 dead 700k affected
$13 billion donated by 2015
Corrupt government
22
Q

CASE STUDY-Japan

A 
2011
Magnitude 9
Struck 100km off shore
10 metre tsunami 
Earthquake drills to prepare
Sea walls were already in place
23
Q

CASE STUDY-Iceland

A

2010
Flights cancelled due to ash cloud from eruption
100k flights cancelled
Airlines lost $1.7 billion

Geography (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions