Learn about The Antarctic Ozone Hole in this educational video from dizzo95.
Read the full transcript »
Male Speaker: Time-lapse satellite pictures have confirmed the annual appearance of the massive hole, shown in red and purple at the center. One theory for the appearance of the hole in the ozone layer is that it's a natural phenomenon caused by the Antarctica's climate and the solar cycle. Windpods carried by the research aircraft were preprogrammed to collect meteorological data to test this idea, but the most popular theory is that man made chemicals, chlorofluorocarbons known as CFCs are causing the problem. CFCs are widely used in aerosol packs and to expand firm plastics used in packaging, but when released, they float up into the atmosphere where under the action of sunlight, they release chlorine. One part of raw chlorine can destroy 1,100 parts of ozone; O3 as it's known scientists, a form of oxygen, which filters ultraviolet rays from the sun.