Read the text about lightning and complete it using the missing words from the box. There are THREE words you will not need.


Lightning is a form of electricity that is set free during a storm. Energy is suddenly in a cloud when charges are built up. Although lightning is most in tropical and subtropical regions, it can happen wherever hot air mixes with cold air. Thunderstorms produce about 8 million lightning a day.
Water droplets and ice crystals in a cloud have electric , positive and negative ones. Lightning occurs when too many negative charges build up in a cloud and positive charges develop on the ground.

The particles want to meet and race towards each other. A of lightning is a sign of this meeting. Such a charge of light can be very hot, up to 20,000 degrees Celsius. It can be up to 5 km long. Large produce more electric charges and eventually a very strong electrical .

Lightning can also occur between two clouds or within a single cloud. In rare cases, negative charges can form on the ground and lighting moves , as is the case when a rocket starts.

Lightning very quickly - several times within a second, but single bolts of lightning are impossible to see with a naked eye. A series of such bolts appear as a single flash.

Lightning can do to buildings, cars or other objects when it hits. It can also kill or injure human beings. During a people should stay away from doors, windows and electrical devices. You should also stay away from phones and because lightning can travel through them. When you’re in the open do not try to protect yourself by hiding under a tree.

You can protect your house or other buildings surrounding your home by installing a lightning on the roof. It attracts the lighting that would otherwise hit the building and leads it to the .