EARTH SCIENCE
OCEANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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circulates existing water on Earth
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reduces pollution in most of the water
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increases usable supply of Earth’s water
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None of the above
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Detailed explanation-1: -The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Detailed explanation-2: -Over time, the water returns to the ocean, to continue the water cycle. The ocean plays a key role in the water cycle. The ocean holds “97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation".
Detailed explanation-3: -Energy from the sun causes water on the surface to evaporate into water vapor – a gas. This invisible vapor rises into the atmosphere, where the air is colder, and condenses into clouds. Air currents move these clouds all around the earth.
Detailed explanation-4: -When molecules of water vapor return to liquid or solid form, they create cloud droplets that can fall back to Earth as rain or snow-a process called condensation. Most precipitation lands in the oceans.