Climate Change

Question 13 • RMA FL-2001310-Earth/Space Science Semester 2

Which statement best describes the greenhouse effect?

Answer

It is a process by which plants are able to grow well in a warm, enclosed structure.

It is a process by which greenhouse gases block the sun’s light to penetrate the atmosphere.

It is a process by which greenhouse gases allow the sun’s light to penetrate the atmosphere but stop the heat from escaping.

It is a process by which prevailing winds bring moisture to the land, to the prevailing wind direction.

Explanation

Sunlight passes through the atmosphere and warms Earth’s surface. The surface releases heat, and greenhouse gases absorb and re-emit some of that heat, slowing its escape into space. So the best description is that greenhouse gases let sunlight in but help keep heat from escaping; they do not simply block sunlight.

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