2.1.1 explain the formation of land and sea breezes.
Design models to demonstrate convectional current during the formation of land and sea breezes.
NOTE:
Examples of models that could be designed are the smoke box and heated water with crystals of KMnO4.
Explain why sea breeze occurs during the day and land breeze during the night.
2.1.2 identify the various types of air masses and describe their pattern of movement.
Trade winds: Easterlies and Westerlies.
Design models and discuss the direction of movement of major air masses on the earth‟s surface.
NOTE: Description of pattern of air movement should be limited to air masses affecting seasons in the West African sub-region.
2.1.3 describe the effect of moving air masses.
Effect of moving air masses: Formation of storms/cyclones.
Precautions against the effects of storms.
Discuss differences between air masses and storms.
Discuss early warning signs of approaching storms.
Discuss some effects of moving air masses: Spread of pollutants, effect on climate etc.
NOTE:
Tornadoes, hurricanes, typhoons are terms which describe cyclones in different parts of the world.
PROJECT:
Students in groups of two or three to use search engines from the internet or local newspapers or international news stations to gather information and write a report on storms around the world, forecasting procedures, early warning signs etc.
Students make a presentation of report in class for discussion and award of marks.
Mention two warning signs of approaching storms and two precautions to be taken to ensure safety.
Draw a future's wheel to show
the consequences of the spread of pollutants by moving air masses around the earth.
Explain how pollutants from one country could lead to problems in another country.
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