LESSON 5

• Hazard


  is a dangerous phenomenon, substance, human activity or condition that may cause loss of life, injury, or other health impacts, property damage, loss of livelihoods and services, social and economic disruption, or environmental damage
• Type of Hazards

  • Natural Hazards
  • Quasi-natural Hazards
  • Technological (Man-Made) Hazards
• Natural Hazards


  arise from natural processes in the environment
• Natural Hazards


  earthquake, tsunami, landslide, volcanic eruptions, and floods
• Quasi-natural Hazards


  from the word "quasi" which means "partly or almost"
• Quasi-Natural Hazards


  arise through the interaction of natural processes and human activities
• Quasi-Natural Hazards


  pollution, smog, fog
• Technological (Man-Made)


  arise directly as a result of human activities
• Technological (Man-Made) Hazards


  accidental release of chemicals, toxic and pesticides; nuclear raditions; factory explosions; fires
• Hazard Signs and Symbols


  designed to become recognizable to anyone as a signal word like danger or warning
• Signages can be found in places near fault lines where the

  damage is more dangerous.

  Fault Lines

  
• Typically located near the sea where a tsunami might

  occur after a strong earthquake.

  Tsunami

  
• Signages can be located

  near an active volcano. They

  serve as a precaution for

  people or visitors that are

  near the area.

  Volcanic Hazard Zone

  
• Flash Flood


  Flash Flood

  
• Landslide


  Landslide

  
• Avalanche


  Avalanche

  
• Tornado


  Tornado

  
• Wild Fire


  Wild Fire

  
• Falling Ice


  Falling Ice

  
• Shark Zone


  Shark Zone

  
• Elephant Crossing


  Elephant Crossing

  
• Chemicals or other

  poisonous substances

  is released into the

  water which causes it

  to be dangerous not

  only to marine lives,

  but also to animals and

  humans.

  Aquatic Toxicity

  
• Fine solid particles

  and other

  dangerous air

  substances are

  spread-out to the air

  which causes it to

  affect or destroy our

  respiratory systems.

  Air Toxicity

  
• • Flammable
  • Self-heating
  • Emits Flammable Gas
  • Pyrophoric

  
• • Reproductive Toxicity
  • respiratory Sensitizer
  • Target organ toxicity
  • Aspiration toxicity


  Health Hazard

  
• • Explosives
  • Self-reactives
  • Organic Peroxides


  Exploding Bomb

  
• Skull and Crossbones


  • Fatal or toxic
  • Acute Toxicity