What causes winds?Wind is caused by differences in air pressure within our atmosphere. For example if it's warm in the room and cold outside, when we open the door, the cold air will flow into the room, and the warm air will come out. The cold air is heavier and moves down and the warm air is lighter and climbs up. Thus, the air also moves freely: from the cooler areas it flows into warmer areas, and vice versa.
There are various types of winds. In winter, when it's colder on the land than at sea, cold wind blows from the land to the sea. This wind, which raises large waves in the sea, if it’s to strong it can be called storm.
What is Cyclone and Typhoon?The winds can be very strong and they can cause great damage. In some parts of the world there are strong winds. From the Pacific ocean blows strong wind called “cyclone”, which breaks down many buildings, draws trees from the roots and rolls trucks and trains. Such a strong wind blows in China, where its name is Typhoon.
A hurricane is also a strong wind that devastates entire areas of North America.
Typhoon (cyclone) and hurricane are fast and sudden winds, which fly over one area and after a while they appear again.
There are also winds that come suddenly and disappear, and they are just considerably weaker than typhoons and hurricanes. Such winds are storms.
The storm comes abruptly and brings rainfall, and often hail (frozen rain). Storm usually comes with thunder and lightning.
What is a Tornado?The whirlwind is also a wind which moves in circular motion; Sometimes it's so powerful that it can raise some objects. In some places, the whirlwind is even stronger and is known as the tornado.
What are trade winds?
The trade winds are the prevailing pattern of easterly surface winds found in the tropics, within the lower portion of the Earth's atmosphere, in the lower section of the troposphere near the Earth's equator.
The trade winds blow predominantly from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere, strengthening during the winter and when the Arctic oscillation is in its warm phase.
Trade winds have been used by captains of sailing ships to cross the world's oceans for centuries, and enabled European empire expansion into the Americas and trade routes to become established across the Atlantic and Pacific oceans.
Most tropical storms, including hurricanes, cyclones, and typhoons, develop as trade winds. Differences in air pressure over the ocean cause these storms to develop. As the dense, moist winds of the storm encounter the drier winds of the coast, the storm can increase in intensity.
Strong trade winds are associated with a lack of precipitation, while weak trade winds carry rainfall far inland. The most famous rain pattern in the world, the Southeast Asian monsoon, is a seasonal, moisture-laden trade wind.
In the southern and southeast parts of Asia, monsoons blow. In winter wind blows from the land to the sea, and it's a winter monsoon, and in summer wind blows from the sea to the land, and it's summer monsoon.
Sailors and aviators pay special attention to the winds, as strong winds sometimes completely disable the flights or the sailing of ships. In meteorological stations, experts, using various devices, predict what the time will be like and inform the sailors and aviators.
Wind power can also be very useful for turning windmills and small power plants, to start irrigation pumps, to start purification devices in the mines and to sail ships to sails.