Contoh teks factual report tentang bencana petir

Contoh Report Text Tentang Petir

Lightning is a powerful burst of electricity that happens very quickly during a thunderstorm. Lightning is caused by an electrical charge in the atmosphere that is unbalanced. The movement of rain and ice inside a thundercloud creates an electrical charge, with the negative charge (electrons) forming at the bottom of the cloud and the positive charge (protons) forming at the top.Opposites attract so the negative charge at the bottom of the cloud seeks out a positive charge to connect with.

Lightning is usually produced by cumulonimbus clouds that are very tall and dense. Lightning can occur inside clouds, between clouds and from clouds to the ground. Around one quarter of lightning is from cloud to ground.  There are bolts of lightning striking somewhere on Earth every second. Most lightning occurs over land rather than oceans, with around 70% of it occurring in the Tropics. Lightning strikes usually last around 1 or 2 microseconds. Lightning contains millions of volts of electricity. The average temperature of lightning is around 20000 °C (36000 °F).

When lightning strikes the ground it seeks out the shortest route to something with a positive charge, this might be a tree, a tall building or if they’re very unlucky, a person. Thousands of people are struck by lightning every year. Direct lightning strikes are usually fatal. Lightning rods (also called conductors) are metal rods or similar objects that divert lightning safely to the ground, they can often be seen at the top of tall buildings.

Thunder is the sound caused by lightning. Lightning can also occur during volcanic eruptions, dust storms, snow storms, forest fires and tornadoes.  The study of lightning is known as fulminologywhile astraphobia is the fear of thunder and lightning.