Greenhouse Gases (water, carbon dioxide, methane, SF6 etc.) are made up of at least two molecules. The bond size between the atoms in the molecules is such that it can absorb heat more easily than other molecules. When solar energy comes to the atmosphere they absorb the solar energy as heat then radiate it to other atmospheric (non-greenhouse) gases such as nitrogen and oxygen..
Greenhouse gases in the atmosphere absorb and retain infrared radiation (heat) from the surface of the earth.
Greenhouse gases.
In the atmosphere
Greenhouse gases.
The greenhouse effect warms the gases in the atmosphere.
No. Greenhouse gases in the atmosphere capture heat, and heat is energy, but we have no way of using this energy for ourselves as fuel. This extra energy in the atmosphere will be expended in more severe weather, like storms and cyclones.
Greenhouse Gasses
it allows solar radiation to penetrate to the surface!
There is a greenhouse effect on Earth because three-atomed gases in the atmosphere retain heat and ensure that the earth stays warm. Other examples of a greenhouse effect are the atmospheres of Venus and Mars. Mercury has an atmosphere but has no greenhouse effect, as the main gases (hydrogen, helium and oxygen) are not greenhouse gases. So Mercury is a non-example of the greenhouse effect. The moon is also a non-example, as it has no atmosphere at all.
Generally they tend to retain more energy than is expelled.
They do. Greenhouse gases in the atmosphere retain heat rising from the surface of the earth and stop it escaping into space. This keeps the earth comfortably warm and has done for thousands of years.
There is a greenhouse effect on Earth because three-atomed gases in the atmosphere retain heat and ensure that the earth stays warm. Other examples of a greenhouse effect are the atmospheres of Venus and Mars. Mercury has an atmosphere but has no greenhouse effect, as the main gases (hydrogen, helium and oxygen) are not greenhouse gases. So Mercury is a non-example of the greenhouse effect. The moon is also a non-example, as it has no atmosphere at all.