Lesson 21,22,23

• Weather - conditions of the atmosphere over a short period of time
• Climate - how the atmosphere behaves over a long period of time and space
• Forecast - scientific prediction of the weather conditions in the future
• Thunderstorms - weather disturbances that brings heavy rain, sometimes accompanied by thunder and lightning
• Red

  • More than 30 mm of rain
  • serious flooding
  • evacuate immediately
• Orange

  • 15-30 mm intense rain
  • Flooding is threatening
  • Alert for possible evacuation
• Yellow

  • 7-15 mm heavy rain
  • Flooding is possible
  • Monitor weather condition
• What are the two types of breeze?

  Land breeze, sea breeze
• What type of breeze usually happens during the day?

  Sea breeze
• The sea breeze blows from sea to land, cooling the land and bringing moisture from the sea.
• What type of breeze occurs during the night?

  Land breeze
• Land breeze flows from the land to the sea, bringing warm air from the land and cool air from the sea.
• Warm air can rise over the land during the day and cool air can sink over the land at night.
• What is a convection cell?


  A circular pattern of air or water movement caused by temperature differences.
• Land =

  Day: high temperature, low pressure

  Night: low temperature, high pressure
• Sea=

  Day: low temperature, high pressure

  Night: high temperature,low pressure
• What are monsoons?


  Seasonal winds that bring heavy rainfall, especially in South and Southeast Asia.
• What does ITCZ stand for?

  Intertropical Convergence Zone
• Amihan:

  • November-February
  • Cold and relatively dry air
  • Central and western part of Luzon and Visayas
• Habagat:

  • June-September
  • Heavy rains, warm and moist air
  • Western sections of Southern Luzon, Visayas, and Mindanao
• How does Amihan work?

  Air mass moves and gathers moisture before reaching and affecting the eastern parts of the country
• How does Habagat work?

  Relatively warmer air in the continent rises and creates a low-pressure area which enables the moisture bearing winds.