A drought is an extended period of significantly below average precipitation in a region.
Severe droughts occur commonly in the interior and towards the western coast of continents, particularly Africa and Australia. However, they can occur anywhere, and with different levels of severity.
Drought is an abnormally long period of dry weather because there is a severe lack of water in an environment over an extended period of time. For a drought to happen, it means that rainfall has fallen below the average necessary to water crops and/or livestock, and to refill dams for months at a time. When moisture near the ground rises into the colder areas of the upper atmosphere rain clouds form. High pressure in the atmosphere causes air to rise instead of falling, resulting in dry, sunny weather. When high pressure cannot be displaced by low-pressure for an extended period of time, the result is drought.
Lack of rain may be a result of the El Nino phenomenon, which brings dry conditions to some parts of the world for sometimes as long as several years at a time. This is why the southern continents of Africa and Australia are particularly prone.
Desertification is a vicious cycle which increases drought-like conditions, and makes it increasingly difficult for the land to recover. Desertification may occur as a result of man's intervention in the environment, particularly activities such as deforestation and cutting down trees, over-grazing of stock animals, or farming unsuitable crops for a region (e.g. rice, which has to have large amounts of water pumped to it).
Some recent droughts are believed to have happened because of global warming.
droughts happen because of no rainfall over a period of time.
There 10 facts about droughts
Control of floods and droughts.
No. Earthquakes and droughts are completely unrelated phenomena.
Most of the droughts occur when there is lack of trees.
droughts happen because of no rainfall over a period of time.
droughts happen when there is a spell of very dry weather when there is very little rain
Droughts are not held, they happen. They happen where there is not enough rain or a man made interference in water getting to where it's needed.
Droughts are not held, they happen. They happen where there is not enough rain or a man made interference in water getting to where it's needed.
extensive droughts.
most of them walk but might have a problem because of the droughts and floods that happen!
Lakemoss:Not really, but it can stop raining for a very long period of time.
Many hurricanes, floods, and droughts.
Antarctica is a polar desert with an average humidity of five percent. It is the driest continent on earth.
droughts usually happen between 15 and 20 degrees latitude because those are the permanently arid and continental regions (very dry). These regions are permanently arid because warm tropical air masses descend to hearth surface and become hotter and drier.
There 10 facts about droughts
they most likely happen in very hot places where there isn't alot of rain i think