Types of Natural Hazards
- Created by: Amy Pike
- Created on: 18-09-20 13:17
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- Types of Natural Hazards
- Atmospherical
- Drought
- A deficiency of rainfall over an extended period of time creating an inadequate water supply for plants, animals and human beings.
- In the most severe cases they can last for many years.
- Extreme Temperatures
- Heatwaves are prolonged periods of excessively hot and humid weather relative to a region's normal climate patterns.
- These conditions can induce heat related illnesses through poor air quality etc.
- A cold wave can be either a prolonged period of excessively cold weather or the sudden invasion of very cold air over a large region.
- Cold waves can cause damage to agriculture, infrastructure and property.
- Heatwaves are prolonged periods of excessively hot and humid weather relative to a region's normal climate patterns.
- Drought
- Hydrological
- Floods
- General floods can be predicted in advance unless it is a flashflood.
- The impacts of flooding include the destruction of housing, crops, cattle and people.
- Flash floods are sudden extreme volumes of water that flow rapidly and cause inundation.
- Flashfloods are difficult to predict therefore people have little time to escape.
- Avalanches
- Snow and ice that slides down a mountainside under the force of gravity.
- Floods
- Geophysical
- Earthquakes
- Earthquakes often trigger powerful aftershocks causing further damage as well as increasing the risk of landslides, tidal waves and tsunamis
- An earthquake is the result of the sudden release of energy from forces deep within the earth's interior
- Landslides
- A landslide is the downward and outward movement of rock or soil on a slope controlled by gravity.
- It is caused by heavy rain or areas of heavy snow, soil erosion and earth tremours.
- Tsunamis
- A tsunami is a series of large waves in a water body caused by the displacement of a large body of water (usually an ocean or large lake)
- The waves can cause mass destruction inland as they can extent over thousands of kilometres.
- Earthquakes, volcanic eruptions and other underwater explosions above or below water can trigger a tsunami.
- The waves have a very long wavelength but their amplitude is much smaller offshore
- Volcanic Activity
- Volcanic eruptions occur when lava and gas are discharged from a volcanic vent.
- People situated around the volcano are forced to flee the moving lava flow
- They can often cause temporary food shortages and volcanic ash landslides called Lahar.
- Earthquakes
- Atmospherical
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