3 Why are there different seasons? 1. Look at the picture on the right and write the correct answers on the . (1) Besides rotation, the Earth also moves around the . This is called revolution. (2) A complete revolution takes a , which is about 365 days.
Revolution of the Earth
Hong Kong
2. What is special about the axis of the Earth? Analyse the relationship between the angle of sunlight and the changes of seasons in the two hemispheres. Circle the correct answers and write the correct seasons on the .
When the northern hemisphere receives overhead sunlight:
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northern hemisphere equator
Hong Kong
southern hemisphere
sunlight
Earth’s axis
Melbourne
Hong Kong
The temperature in the northern hemisphere becomes higher / lower as it receives stronger / weaker sunlight. It is in the northern hemisphere and in the southern hemisphere.
Melbourne, Australia
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