Greenhouse Gas Molecules:
The greenhouse gas molecules are shown in the next series
of figures along with the IR spectra and the bending and vibrations
caused by absorbing the IR radiation. The arrows on the molecules
indicate the direction of the bends and vibrations of the bonds.
The IR spectra indicates the specific energies at certain wavelengths
which are absorbed. Radiation that is 100% transmittance is not
blocked but travels straight through the sample. The dips in
the lines are caused by the absorption of energy, hence only
10% of the energy is transmitted.
The graphic on the left is carbon dioxide.
Figure 1: Water
Figure 2: Methane
Figure 3: Nitrous
Figure 4: All
Overall Question: In your own words, explain how greenhouse
gases cause global warming.