tectonic hazards

• whats a earthquake

  sudden and voilent period of earth shaking
• what are earthquakes caused by

  sudden movement of rock within earths crust
• where does earthquakes mainly accour

  tectonic plate margins

  where plates move and large amounts of pressure build up and realised
• what are the two types if tectonic plats

  oceanic

  contential
• oceanic crust

  denser and thinner
• Continental crust

  less dense but thicker
• whats a volcano

  large land form usually formed over a long period of time by a series of eruptions
• volcanoes developed

  hot molten rock from deep within earth that rises at the surface
• what are the three plate margins

  constructive

  destructive

  conservative
• what happens at constructive

  where two plates move apart
• what forms at constructive

  earthquakes
• what a destructive plate margin

  where two plates are moving towards one another
• what forms at destructive plate margins

  earthquakes and volcanos
• what happens at conservative

  where two plates sre sliding against eachother
• what forms at constructive

  volcanoes
• how does iceland benefit from tectonnic activity

  toursim- provided jobs

  geothermal energy provides 25% of energy

  volcanic rocks used for consturctions

  natural hot water provided heat for 90%
• how do you reduce risk

  montoring

  prediction

  pretection

  planning
• what is monitering

  using scientific equipment to detect warning signs of events
• whats prediction

  using historical evidence and monitoring to make prediction
• protection?

  designing buiding that will withstand tectonic hazards
• planning?

  identifying and avoiding places most at risk
• how is monitoring used for volcanoes

  remote senesing - detect heat changed to volcanoes shap
• how is montering used for earthquakes

  earthquakes occur with no warning however there is some evidence of chsnged in water pressue
• prediction for volcnaoes and earthaueks

  volcanoes- used monitroing

  earthquakes- impossible
• how is protection used for volcnaoes

  hard to protect peoplle and property

  used embankments to divert lava
• how is protection used for earthaukes

  building resitsnt to ground

  tsunami walls
• hiw is planning used to protect volcanoes

  hazard maps
• how is planning used earthquakes

  mapes show effect of earthquakes and identify those at risk