U1: Weather hazards

• What temperature do oceans need to reach for tropical storms to form?

  26.5°C
• What process occurs when warm ocean water evaporates?

  Mass evaporation forms clouds
• What happens to clouds as they move over warm oceans?

  More condensation occurs
• What causes the cool air to sink in a tropical storm?

  Cool air sinks downwards
• What leads to the formation of trade winds in a tropical storm?

  Cool air sinking causes vapor to condense
• What is the movement of air in a tropical storm?

  Anti-Clockwise movement of air storm
• How do tropical storms form?

  1. Oceans reach 26.5°C
  2. Mass evaporation forms clouds
  3. Clouds move over warm oceans, condensing
  4. Cool air sinks, causing vapor to condense
  5. Leads to trade winds and large cloud formation
• Coriolis effect - winds blow from areas of high pressure to areas of low pressure. As the Earth spins, the wind bends due to the Earth's natural curvature. This causes spinning winds (which creates weather hazards such as tornadoes)