natural hazards

• Natural Hazard


  A natural process which can cause death, injury, disruption to humans or destroy property and possessions
• Natural Disaster


  A natural Hazard that has already happened
• Types of natural hazards

  • Geological hazards
  • Meteorological hazards
• Geological hazards


  • Caused by the land and tectonic processes
• Geological hazards


  • Volcanoes
  • Earthquakes
  • Landslides
• Factors affecting hazard risk

  • Human factors: Population, Income level, Ability to cope
  • Natural factors: Type of hazard, Frequency and magnitude, Physical geography
• Primary effects of natural hazards

  • Building and Road destruction
  • Deaths and injuries
  • Crop and Water Supplies being damaged or contaminated
  • Electricity cables, gas pipes and communication networks being damaged
• Secondary effects of natural hazards

  • Initial hazards triggering other hazards
  • Emergency aid unable to get through
  • Lack of clean water and sanitation causing diseases
  • Country's economy being weakened
• Immediate responses to natural hazards

  • Evacuating people
  • Treating the injured
  • Rescuing people
  • Giving temporary food and water supplies
  • Foreign aid from other countries
• Long-term responses to natural hazards


  • Repairing houses
  • Repairing buildings
  • Repairing roads
  • Improving forecasting, monitoring and evacuation plans
  • Promoting tourism to boost economy