Natural Hazards

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  • Created by: Charlotte
  • Created on: 04-10-13 09:29
Destructive Plate Boundary
Where a continental and an oceanic plate move towards each other. These plate boundaries can cause both volcanoes and earthquakes. An example of one is the between the South American and Nazca Plates.
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Constructive Plate Boundary
Where two plates move away from each other. These boundaries can cause volcanoes. An example of one is between the Eurasian and North American Plates. (The Mid Atlantic Ridge)
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Conservative Plate Boundary
Where two plates slide sideways past each other. Few volcanic eruptions are caused here but earthquakes are frequent and strong. An example of one is on the western coast of the USA.
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Earth's Crust
The solid, outer layer of the earth.
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Tectonic Plates
Large segments of the Earth's crust.
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Mantle
The layer of the Earth between the crust and the core.
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Magma
Liquid rock below the Earth's surface.
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Primary Effects
Those resulting directly from the event itself. E.g. Buildings collapsing.
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Secondary Effects
Those that result from the primary effects. E.g. Diseases
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Tsunamis
Large ocean waves caused by an underwater earthquake.
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Richter Scale
A measure of earthquake strength.
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Aftershocks
Smaller tremors occurring after an earthquake.
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Liquefaction
The loss of strength that can occur in the ground during earthquake shaking.
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Retrofitting
The addition of new technology to older buildings.
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Appropriate Technology
Technology designed with consideration for the community it is intended for.
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Epicentre
The point on the Earth's surface directly above the focus of an earthquake.
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Building Code
Regulations which state how a building should be constructed in order for it to be safe.
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Seismic Activity
Movements in the Earth's crust.
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Laser Ranging
Using laser beams and mirrors to detect minute changes in the shape of the land.
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Evacuation
Movement of the people away from a place of danger to a place of safety.
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Storm Surges
Abnormal rise of the sea along a shore as the result of a storm; sometimes called a tidal surge.
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Tropical
Situated in the area between the tropics of Cancer and Capricorn.
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Eye of the Storm
The calm, clear area at the centre of the tropical storm.
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Track
The path taken by a tropical storm.
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Mandatory Evacuation
An evacuation that is commanded by the authorities.
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Natural Cycle
Series of events in nature that are repeated over and over again.
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El Nino
A warming of the ocean surface off the western coast of South America.
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Physical Effects
Those affecting natural and build materials.
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Social Effects
Those affecting people.
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Economic Effects
Those affecting money and business.
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Drought
A long period of low rainfall.
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Geographical Information System (GIS)
Electronic system used for storing, analysing, managing and presenting data, which is linked to a location.
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Wildfire Intensity
The serverity of burning
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Wildfire Season
The period of the year during which wildfires occur.
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Wildland-urban Interface
Area where houses and other human developments are built on the fringes of wilderness areas.
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Lava
Liquid rock above the Earth's surface.
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Other cards in this set

Card 2

Front

Where two plates move away from each other. These boundaries can cause volcanoes. An example of one is between the Eurasian and North American Plates. (The Mid Atlantic Ridge)

Back

Constructive Plate Boundary

Card 3

Front

Where two plates slide sideways past each other. Few volcanic eruptions are caused here but earthquakes are frequent and strong. An example of one is on the western coast of the USA.

Back

Preview of the back of card 3

Card 4

Front

The solid, outer layer of the earth.

Back

Preview of the back of card 4

Card 5

Front

Large segments of the Earth's crust.

Back

Preview of the back of card 5
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