Read to the extracts of the texts and define what disaster is described proving your answer with the key-words. (Прочитать описание природного явления и написать что это.) Concept Checking: What should you do?
Extract 1 Cracks or weaknesses allow magma to rise up. Pressure builds up which, then, releases suddenly causing the magma to explode. Magma that reaches the earth surface is called lava.This molten lava eventually cools to form new rock.
Extract 2 This natural event causes dry land suddenly gets submerged under water. Some of them occur suddenly, others take days or even months to build. The disaster may be caused by heavy rainfalls when rivers flow over their banks.
Extract 3 It is caused by the shaking of the earth’s surface. It happens when two blocks of the earth suddenly slip past one another, or break apart from each other as a result of tension caused by prolonged energy build up.
Extract 4 It has uncontrolled spreading. It is usually started out of a lightning strike, or people careless camping. They sometimes burn for days and weeks. They can destroy almost every organic matter in the area.   
Extract 5 It appears in cumulonimbus clouds. It looks like a rapidly violent rotating column of air. It forms because of the collision between warm and cool air masses. It can cause lots of destruction. It can uproot trees and raise houses, twirl and drag them into its “eye”.
 

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