Wednesday, 20 March 2013
There are two main factors that causes hurricane storms which are vaporize warm water and high speed of wind. Hurricanes occur when the moist warm air from the surface of the ocean rises and meets cooler air. In that situation, the moist warm air condenses and produce storm clouds and raindrops. It also release of suppressed heat due to condensation process, which upsurges the temperature of the cooler air.
Tropical cyclones are like giant engines that use warm, moist air as fuel. That is why they form only over warm ocean waters near the equator. The warm, moist air over the ocean upsurges upward from near the surface. Because this air travels up and away from the surface, there is fewer air left near the surface. Another way to say the similar thing is that the warm air rises, causing an area of lower air pressure below.
|A cumulonimbus cloud. A tropical cyclone has many of these, they form huge, circular bands. |
Thursday, 7 March 2013
Hurricane is a violent storm which is characterized by extreme ferocity and hasty changes of the wind, and generally escorted by rain, thunder, and lightning especially prevalent in the East and West Indies. and also used figuratively.
|Hurricane Katrina view from somewhere in America|
In a scientific definition, hurricane means a severe, rotating tropical storm with heavy rains and cyclonic winds exceeding 74 mi (119 km) per hour, especially such a storm occurring in the Northern Hemisphere. Hurricanes is original came from the tropical parts of the Atlantic Ocean or the Caribbean Sea and move generally northward. It will lose its force when it move over land or colder ocean waters. Hurricanes can bring a lot of damage and effect towards an area which is affected. This natural disaster can make a country become unstable in many aspects such as political, economy, social relationships and financial.
|The hurricane's view from satellite|
Tropical cyclones categories :