- published: 03 May 2016
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Thunder is the sound made by lightning. Depending on the nature of the lightning and distance of the listener, thunder can range from a sharp, loud crack to a long, low rumble (brontide). The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave which produces the sound of thunder, often referred to as a clap, crack, or peal of thunder. The distance of the lightning can be calculated by the listener based on the time interval from when the lightning is seen to when the sound is heard.
The dry season is a yearly period of low rainfall in the tropics. The weather in the tropics is dominated by the tropical rain belt, which oscillates from the northern to the southern tropics over the course of the year. The tropical rain belt lies in the southern hemisphere roughly from October to March, and during this time the northern tropics experience a dry season in which precipitation is more rare, and days are typically sunny throughout. From April to September, the rain belt lies in the northern hemisphere, and the southern tropics experience their dry season. Under the Köppen climate classification, for tropical climates, a dry season month is defined as a month where average precipitation is below 60 millimetres (2.4 in).
The dry season is characterized by its low humidity, and some watering holes and rivers drying up. Because of the lack of these watering holes, many grazing animals are forced to migrate due to the lack of water and feed to more fertile spots. Examples of such animals are zebras, elephants, and wildebeest. Because of the lack of water in the plants, bushfires are common.
Dry or dryness denotes a lack of water. It may also refer to
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A truth
too fragile
Movement
still
slow
Asleep and frail
Stiffness breeding faster
Reality
exhale
Faith descending
Running
to its end
Watching this world