Solar System Online Practice

Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
How does the greenhouse effect enable life on Earth?(1 point)
Responses

It controls the amount of carbon dioxide in the atmosphere.
It controls the amount of carbon dioxide in the atmosphere.

It keeps out the sun’s harmful UV radiation.
It keeps out the sun’s harmful UV radiation.

It allows the atmosphere to retain heat.
It allows the atmosphere to retain heat.

It keeps the atmosphere thick.

1 answer

The correct response is:

It allows the atmosphere to retain heat.

The greenhouse effect is a natural process that warms the Earth's surface. When the Sun's energy reaches the Earth, some of it is reflected back to space and the rest is absorbed, warming the planet. The Earth then emits this energy in the form of infrared radiation. Greenhouse gases in the atmosphere trap some of this heat and prevent it from escaping back into space, which helps to keep the planet warm enough to support life.

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