unit 17 weather, climate and people
TRANSCRIPT
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Unit 17 Weather, Climate and People
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Objectives
• Discuss how weather and climate affect people positively or negatively.
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Positive Effects of Weather and Climate on people
• Energy• Farming• Tourism
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Energy
• Man can harness solar energy and wind energy.• Solar panels on the roofs of home will trap
solar energy and convert the energy into electricity for heating water.
• In some countries, solar energy is used to replace petrol.
• Wind is used to turn wind turbines to produce electricity.
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Turbine Solar panel
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Farming
• Climate determines the amount and the type of crops that can be grown.
• For example, in tropical climate, farmers are able to grow more than one crop a year as there is high temperature and high rainfall throughout the year.
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Tropical fruits
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Tourism
• Tropical island with hot and sunny such as Maldives attract tourists from countries experiencing winter.
• Tourists from warmer countries like to visit Switzerland to ski Swiss Alps.
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Maldive Island
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Swiss Alps
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Negative Effects of Weather and Climate on people
• Too much water• Too little water• Extreme heat and cold• Extreme winds
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Too much water
• Extreme weather like prolonged heavy rain can cause rivers to overflow their banks and cause flood.
• Buildings, transportation networks and farmlands are damaged.
• Houses may be swept away and lives may be lost.
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Floods
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Too little water
• Droughts occur when there are prolonged and abnormally dry periods of insufficient rainfall.
• Rivers, reservoirs and lakes may dry up.• Crop failure may lead to famines.• Eg: Sudan, Ethiopia and Somalia.
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Drought
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Extreme heat and cold
• Heat waves that occur in summer may cause bushfires and kill lives and destroy farmlands.
• Cold waves are caused when frigid polar winds blow into a certain regions. Temperature fall drastically to below 0◦C. People who are not properly protected may be vulnerable to pneumonia, bronchitis and frost bite.
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Heat waves
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Extreme winds• Severe storms such as hurricanes and
tornadoes generate strong winds that cause deaths, injuries, crop and property destruction.
• Tornadoes and Hurricanes occur every summer in USA.
• Continuous heavy rainfall result in severe flooding that cause greater damage.
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Tornadoes
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Hurricanes
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Questions to ponder…
• Why do you think there is an increase in hurricanes and tornadoes?
• What is the main difference between a hurricane and a tornado?