Global warming and green house effect
Solar energy reaching the earth is absorbed by the earth‘s surface,which increases it‘s temperature. The rest of the heat radiates back to the atmosphere. Some of the heat is trapped by the gases such as carbon dioxide, methane, ozone, CFCS and Water vapour. They add to the heating of the atmosphere causing Global warming.
In a greenhouse,visible light passes through the transparent glass and heats up the soil and the plants.The warm soil and plants emit infrared rays,it partly reflects and partly absorbs these radiations, this mechanism keeps the energy of the sun trapped in the greenhouse.
