最新提问
我的动态
登录后查看动态
题目内容
题目材料：
The molecules of carbon dioxide in the Earth`s atmosphere affect the heat balance of the Earth by acting as a one-way screen. Although these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through, they absorb some of the longer-wavelength, infrared emissions radiated from the Earth`s surface, radiation that would otherwise be transmitted back into space. For the Earth to maintain a constant aver age temperature, such emissions from the planet must balance incoming solar radiation. If there were no car-bon dioxide in the atmosphere, heat would escape from the Earth much more easily. The surface temperature would be so much lower that the oceans might be a solid mass of ice.
以上解析由 考满分老师提供。
