GSCE geography natural hazards

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Revision cards about the challenges of natural hazards
Megan Kemp
FlashCards por Megan Kemp, atualizado more than 1 year ago
Megan Kemp
Criado por Megan Kemp mais de 6 anos atrás
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Questão Responda
Geological Hazards Caused by tectonic processes Volcanoes Earthquakes Landslides Avalanches
Meteorological hazards caused by weather and climate Eg tropical storms Heatwaves Blizzards
Natural hazards When something is a threat to people or property
Core The core is the centre of the earth and is made up of iron
Mantle The mantle is around the core, and is made of semi-molten rock
Crust Outer layer of the earth
Name the 3 types of plate margins Destructive Constructive Conservative
What is a plate margin ? Where the plates meet
What is a destructive plate margin ? Where two plates are moving towards each other When they meet they often Create volcanos and ocean trenches
What is a constructive plate margin ? Where two plates are moving away from each other Then magma fills the gap
What is a conservative plate margin ? Where two plates are moving sideways against each other
How is a volcano formed ? 1. The plate moves down into the mantle 2. A pool of magma forms 3. Magma rises through the cracks 4. Magma erupts to the surface
How are earthquakes formed ? Earthquakes are caused when tension builds up when two plates meet
What is an epicentre? The middle of an earthquake
How are earthquakes measured ? A Richter scale Or A Mercalli scale
Why do people choose to live near volcanoes ? 1. Soil around volcanoes is fertile meaning the can grow crops 2. They are tourist attractions
What are the management strategies to reduce a tectonic hazard ? Monitoring Prediction Protection Planning
What does eye mean ? The centre of a tropical storm
What is a tropical storm Are areas of intense low pressure with heaving rain and strong winds
Name the 7 different weather hazards in the UK Rain Snow and ice Hailstorms Drought Wind Thunderstorms Heatwaves
What does climate change mean ? An significant change in the earths climate over a long period
Natural factors that affect climate change ? 1. Orbital changes - the way the earth moves around the sun 2. Volcanic activity 3. Solar output - amount of heat the sun gives off
Human factors that affect climate change ? 1. Burning fossil fuels 2. Cement production 3. Deforestation 4. Farming
Environmental effects of climate change Coastal erosion will increase Glaciers and ice sheets are melting Sea levels are rising

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