Hazards overview

• What is a hazard?


  A hazard is a potential source of harm to a person, community, property or infrastructure
• What are the four biospheres?

  Hydrosphere, lithosphere, atmosphere and biosphere
• Explain hydrospheres


  Mainly all of earths water (oceans, rivers, lakes, underground water). It also exists in gas form (water vapour) and solid (snow, glaciers and ice field).
• Hazards that occur due to hydrosphere

  Floods, droughts and avalanches
• Explain lithosphere


  The rocks and soil that form the Earths crust are lithosphere
• Hazards due to lithosphere

  Earthquakes and volcanoes
• Explain atmosphere


  The earths atmosphere is 78% nitrogen, 21% oxygen and the remaining 1% includes co2, water vapour, ozone and argon
• Hazards due to atmosphere 


  Tropical cyclone and bushfires
• What does biotic mean

  Living
• What does abiotic mean

  Non living
• Explain biosphere 


  The biotic environment is the biosphere, it is the part of the Earth where living things can exist on and near the surface
• Explain abiotic


  Abiotic environment, formed by other spheres cannot be separated from the biotic environment as all life must live and adapt to it’s physical environment
• Hazards due to biosphere

  Malaria, and invasive species
• How a hazard is explained 


  A hazard is a potential danger or risk, whether from natural or human processes, which could cause loss of life, injury, property damage, socioeconomic disruption or environmental degradation
• How a disaster is explained

  A disaster is a catastrophic event that causes severe disruption to a community’s function. It must be particularly powerful and cause extreme impacts on property, environment and human life, often beyond the affected communities ability to cope.
• What are geomorphic hazards

  They are hazards created by the movement of the Earths surface or crust. They are driven by geological processes of the Earth particularly plate tectonics
• What hazards are caused by tectonic plates

  Tsunamis, earthquakes and volcanoes
• What are atmospheric hazards


  They are hazards that are created from atmospheric and/or weather processes.
• What are examples of atmospheric hazards


  Storms, tropical cyclones, tornadoes, frosts, heatwaves and bushfires.
• Evaporation


  The process by which water from the Earth's surface, such as oceans, lakes, and rivers, turns into water vapor in the air.
• Condensation


  The process by which water vapor in the air cools and turns back into liquid water, forming clouds.
• Precipitation


  The process by which water falls to the Earth as rain, snow, sleet, or hail.
• Infiltration


  The process by which some precipitation seeps into the soil, recharging groundwater aquifers.
• Runoff


  The process by which precipitation that reaches the ground flows over the surface as water, often eventually making its way back to bodies of water.
• Water Cycle


  The continuous process by which water is circulated between the Earth and the atmosphere through evaporation, condensation, precipitation, runoff, and infiltration.
• what is spatial distribution 


  Spatial distribution refers to how features or objects are arranged on the earths surface
• What is temporal distribution

  Temporal distribution of natural and ecological hazards is concerned with examining the distribution of these hazards over time and how long these hazards over time and how long they last