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Unit 5
Reading
Do you still remember what happened on May 26, ?
On May 12,,a strong earthquake measuring on the Richter scale rocked Wenchuan in Sichuan province, some 92km northwest of Chengdu.
Do you know any other natural disasters ?
Guess what they are according to the pictures.
Facing natural disasters, how weak humans are!
tsunami
earthquake
snowstorm
flood
typhoon
sandstorm
drought
hurricane
tornado
landslide
thunder/
lightning
volcano
However weak we are, we are not completely powerless. People are trying many ways to learn about natural disasters all the time to protect themselves.
Volcanoes begin to form when the rocks of the lower plate get pushed deep into the Earth. There they are heated, until they melt, forming magma, one kind of liquid rock, because magma is less dense than the solid rock around it, it is pushed upward. If the magma finds a weak place at the Earth’s surface, it may break through and form a volcano.
How is a volcano formed?
Can you imagine climbing into a live volcano in order to take the temperature of the boiling rock inside?