Unit 17 weather, climate and people
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Unit 17 weather, climate and people






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    Unit 17 weather, climate and people Unit 17 weather, climate and people Presentation Transcript

    • Unit 17 Weather, Climate and People
    • Objectives • Discuss how weather and climate affect people positively or negatively.
    • Positive Effects of Weather and Climate on people • Energy • Farming • Tourism
    • 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.
    • Turbine Solar panel
    • 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.
    • Tropical fruits
    • 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.
    • Maldive Island
    • Swiss Alps
    • Negative Effects of Weather and Climate on people • Too much water • Too little water • Extreme heat and cold • Extreme winds
    • 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.
    • Floods
    • 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.
    • Drought
    • 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.
    • Heat waves
    • 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.
    • Tornadoes
    • Hurricanes
    • 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?