Sabtu, 12 Januari 2013

Report teks : Thunder and Lightning



Lightning is a sudden, violent flash of electricity betwewn a clound and the ground, or from cloud to cloud. a lightning flash, or bolt, can be several miles long. it is so hot, with an average temperature of  34,000 celcius, that the air around it suddenly expand with a lound blast. this is the thunder we hear .

lightning occurs in hot, we storm. moist air is driven up to a great height. it forms a type of cloud called cumulonimbus. when the cloud rises high enough, the moisture freezes and ice crystals and snowflakes are formed. these begin to fall, turning to rain on the way down. this rain meets more moist air rising and it is the friction between them which produces static electricity. when a cloud is fully charged with this electricity, it discharges it as a lightning flash. 


Created  by Novia Ayu Pratiwi

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