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Transcript of Weather
February, 26, 2012 O2= what we breathe, diatomic O3= triatomic, ozone layer Ozone Layer UV radiation The Greenhouse Effect Global Warming Current Weather Map Warm Air Mass Cold Air Mass Types of Precipitation Hail Rain Snow Sleet How It Forms and they all lived happily ever after... Water Spout What is Fog? Hazardous Weather hurricanes and tornadoes A thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface that obscures or restricts visibility Enhanced Fujita Scale F1 F2 F3 F4 F5 Dust Devil A dust devil is caused in a manner similar to a tornado. However, a dust devil is not formed from a storm system like a tornado. It is formed when a rising column of warm air rushes into a pocket of low pressured cool air. The process causes the air to rotate due to the conserved angular momentum. This rising and rotating column of air picks up dust and debris like a tornado creating a dust devil. tropical thunderstorm: tropical depression: tropical storm: hurricane: A cyclonic storm originating in the tropics and having winds ranging from 39 to 73 miles per hour (34 to 63 knots; 63 to 117 kilometers per hour). A tropical depression is an organized system of clouds and thunderstorms with a defined, closed surface circulation and maximum sustained winds of less than 34 knots (39 mph). It has no eye and does not typically have the organization or the spiral shape of more powerful storms. However, it is already a low-pressure system, hence the name "depression".[ an organized system of strong thunderstorms with a defined surface circulation and maximum sustained winds between 34 knots (39 mph) and 64 knots (74 mph). At this point, the distinctive cyclonic shape starts to develop, although an eye is not usually present. A hurricane is a tropical storm with winds that have reached a constant speed of 74 miles per hour or more.
The eye of a storm is usually 20-30 miles wide and may extend over 400 miles.
The dangers of a storm include torrential rains, high winds and storm surges. Hurricane Satellite Images I II III IV V Eye Wall Eye The region at the center of a hurricane about which the winds rotate, but which itself is relatively calm. surrounds the eye of the hurricane with a wall of clouds that is considered the most deadly area of a hurricane. The eye wall removes any trace of a storm from the hurricane's eye and produces deadly winds more than 150 mph Storm Surge Anvil Cloud Lightening Hail THE END -we live in the troposphere
-man fell at the speed of sound -78% nitrogen
-1% all others
-CO2 = carbon dioxide
-N2 = nitrogen -found in the stratosphere
-at ground level rises up and becomes part of the ozone layer, blocks the UV rays
-CFC's destroy the ozone -methane -polar bears live in the north pole, penguins live in the south pole
-the furthest point north a penguin can live is the Galapagos Islands
-polar bears may go extinct in the next 50 years describes a body of air that has a generally warm temperature describes a body of air that has a generally warm temperature -brings rain -brings the most severe weather