9.10 SkillBuilder activity GEOGRAPHICAL INQUIRY, COMMUNICATING Over the next week, collect weather maps from newspapers or online and locate your area. 1. Identify if a high or low-pressure system is influencing the weather. 2. Determine if the wind moves clockwise or anticlockwise, explaining why. 3. Write a weather forecast for tomorrow, including wind speed and direction. 4. Collect tomorrow’s weather map and record observations. 5. Compare your forecast with actual weather. Assess accuracy and factors influencing changes.
9.10
Exercise
Learning pathways LEVEL1 1, 2, 8
LEVEL2
LEVEL3
3, 4, 7
5, 6, 9, 10
REMEMBER AND UNDERSTAND 1. What is wind? a. Air mixing with the water in the oceans b. Air circulating around the Earth c. A noise heard when the weather changes d. A build-up of pressure 2. Explain why you are not affected by the pressure of the atmosphere. 3. Identify the two factors that influence wind. a. Air pressure b. Where it occurs in the atmosphere c. Temperature variations d. The number of pressure systems 4. Use the provided terms to complete the following sentence and explain the role the sun plays in causing wind.
sun
poles
circulation cooling
heating pressure systems air
The ______________ heats and cools the ______________ above the surface of the Earth. Its ______________ and cooling effects vary from the equator to the ______________. This heating and ______________ leads to the development of ______________ systems. The sun helps drive the Earth’s ______________ pattern as air moves between different pressure ______________. 5. Describe the change that difference in air pressure causes. ANALYSE AND APPLY 6. Explain the interconnection between the Earth’s atmosphere and the weather we experience on the surface of theEarth. 7. Using FIGURE7 indicate which locations will have stronger winds and where the winds will be weaker. a. Darwin, Townsville and Port Hedland Melbourne, Sydney and Canberra b. Justify your choice in part (a) 8. Refer to FIGURES8 and 9 . Create wind symbols to represent the following wind speeds and directions. a. Northerly; 28–32 km/h b. South-westerly; 8–12 km/h c. Easterly; 13–20 km/h
TOPIC9 Water in the world 315
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