SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Clouds block sunlight during the day and prevent heat from escaping at night.
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Clouds block sunlight during the day and allow heat to escape at night.
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Clouds allow sunlight to reach the Earth during the day and prevent heat from escaping at night.
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Clouds allow sunlight to reach the Earth during the day and allow heat to escape at night.
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Detailed explanation-1: -High-level, feathery clouds help heat the planet during the day, allowing sunlight to penetrate the surface and prevent heat from escaping. Meanwhile, lower level clouds often reflect heat from the sun back into space and keep the surface temperatures cool.
Detailed explanation-2: -During the day, clouds can make the temperature on Earth cooler by blocking heat from the sun. At night, clouds can make Earth’s temperature warmer by trapping heat that came from the sun.
Detailed explanation-3: -So clouds are a source of infrared radiation. In this light, think of clouds as “space heaters", emitting energy toward the ground. In turn-about fair play, the ground emits infrared radiation to absorbing clouds, keeping their bottoms warmer (especially low clouds).
Detailed explanation-4: -Cloud tops have a high albedo and reflect much incoming sunlight away from Earth’s surface, making temperatures at the surface cooler on an overcast day. Clouds absorb outgoing nighttime radiation from the Earth, acting as a blanket and keeping minimum temperatures warmer than they otherwise would be.
Detailed explanation-5: -Air and water temperatures are primarily determined by the amount of sunlight that is absorbed by the surface of the Earth, and the amount of heat that is re-radiated in the atmosphere by the greenhouse gases.