Geography- Plate Boundaries and Earth quakes
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- Created by: slippers:D
- Created on: 02-06-13 11:47
What is a constructive plate boundary?
Two plates move away from each other.
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Give an example of a constructive plate boundary.
North American plate and the Eurasian plate
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What is a Conservative (Transform fault) plate boundary?
These plates are the same but pass along side each other as different speeds.
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Give an example of a conservative plate boundary.
North American and Pacific Plate
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What is a destructive (subduction zone) plate boundary?
Occur when an Oceanic plate is subducted under a Continental plate
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Give an example of a destructive plate boundary.
Pacific Plate and Eurasian plate
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What is a collision plate boundary?
Occur when two Continental plates move towards each other.
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Give two examples of Continental plate boundaries.
South American and North American
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Give two examples of Oceanic plate boundaries.
Caribbean and Juan De Fuca
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What was the type of plate boundary the San Fransisco earthquake occured at?
Conservative, the San Andreas fault line. (North American plate and the Pacific plate)
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What was the cause of the 1989 San Fransisco earthquake?
The North American plate boundary moved North 6cm a year and the Pacific plate moved only 1 cm a year.
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What is the difference between the Richter scale and the Mercalli scale?
Richter scale: uses measurements of the seismic waves. Mercalli Scale: Evaluates and rates the damage of an earthquake.
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What did the 1989 San Fransisco earthquake measure on the Rhichter scale? and how long did the earthquake last?
6.9, and it lasted 15 seconds long
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Where was the epicentre of the 1989 San Fransisco earthquake?
Under mnt.Lorna Prieta, 10 miles, NE of the city Santa.
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What were the economic effects of the 1989 San Fransisco earthquake?
$4.4 billion economic costs (MEDC COUNTRY)
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What were the social effects of the 1989 San Fransisco earthquake?
67 deaths, 2000 people homeless
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Give an example of an earthquake in a developing country. State the year it occured and how long it lasted for.
Haiti, January 12th 2010, it lasted one minute.
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What was the Richter scale measurement of the 2010 earthquake of Haiti?
7.0 on Richter scale
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What was the cause of Haiti 2010?
North American Plate and Caribbean plate at aWhate wer conservative plate boundary
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What were the social effects of Haiti 2010?
316,000 killed, 1 million homeless, 3 million affected, 4000 inmates escaped from destroyed prison, increased number of people in shanty towns, wide spread disease e.g cholera
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What were the responses to Haiti 2010?
World vision got food for 1.2 million people, 41,000 families sheltered, aid was sent within 24 hours, $100 million aid from USA, $330 million from European union.
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How can MEDC countries protect against earthquakes?
Make existing buildings stronger and better, Reduce weight of rooves, Lightweight hollow bricks, Strengthen wall corners with mesh and cement, point external walls to prevent falling masonry.
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How can LEDC countries protect against earthquakes?
New buildings more flexible with a shear core, Foundations very deep but allow movement, shock absorbers built into structures, cross bracing to prevent floors collapsing
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What training can be done to make people more prepared for earthquakes?
Emergency plans in place, emergency training and funding, warning systems in place, evacuation plans.
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How can people reduce the impact of an earthquake? (mitigation)
Hazard resistant buildings, disaster kits ready available, strengthening buildings, relocation.
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What is meant by the term 'Liqueification'?
When the ground begins to act like a liquid during an earthquake
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What is the 'Focus' of an earthquake?
start of an earthquake underground.
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What is the epicentre of an earthquake?
The point on the grounds surface directly above the focus.
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The closer to the epicentre the...
increased likelihood of more intense damage.
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Other cards in this set
Card 2
Front
Give an example of a constructive plate boundary.
Back
North American plate and the Eurasian plate
Card 3
Front
What is a Conservative (Transform fault) plate boundary?
Back
Card 4
Front
Give an example of a conservative plate boundary.
Back
Card 5
Front
What is a destructive (subduction zone) plate boundary?
Back
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