Describe the global hydrological cycle. (3 marks)

ANSWER: The process begins when water evaporates from the oceans and lakes due to the heat energy from the sun. In addition, water can also be evaporated from vegetation, this is called transpiration. Once the water evaporates, the steam condenses and comes back down through precipitation, which can be rain or snow depending on the conditions. The rainwater then returns to the oceans and lakes through streams and rivers. As well as this, water can also infiltrate the soil and the permeable rock and return to the oceans and lakes, this is called groundwater flow.

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