1. Electromagnetic radiation that has a wavelength between that of visible light and that of X-rays.
2. Above the troposphere, extending to about 32 miles above the earth's surface.
3. Technical term for ozone layer.
4. It has a high concentration of ions and free electrons and is able to reflect radio waves. It lies above the mesosphere and extends from about 50-600 miles above the earth's surface.
5. Elevation especially above sea level or above the earth's surface.
6. The region surrounding the Earth or another astronomical body.
7. Colorless unstable toxic gas with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light. It differs from normal oxygen in having three atoms in its molecule.
8. Earth's air, which is made up of a thin layer of gases, solids, and liquids; forms a protective layer around the planet and is divided into five distinct layers.
9. Short for chlorofluorocarbon.