Green house effect : Sun rays from the Sun pass the earth’s atmosphere and infrared radiations of short wave length reach the earth’s surface and objects (plants) on it. They get warmed during day time. At night the same earth’s At mosphere becomes opaque i.e. does not allow infra-red radiations of long wavelength to go back. In other words atmosphere entraps (or long wavelengths are absorbed by green house gases like CO2 methane, chlorofluorocarbons) and hence atmosphere acts as green house with glass walls and raises the temp, inside. Hence green house effect “is the phenomenon in which infrared radiations of long wavelength given out from the surface of earth are absorbed by its atmospheric gases to keep the environment at the earth’s surface and its lower atmosphere warm”.
