剑桥2 Unit 9 Period 3.ppt

What do you know about tsunami? What do you want to know about tsunami? 5b Read through topics 1-4. Match the topics with the paragraphs in the text and explain your choices. Answers: 1 B 2 D 3 A 4 C 5a Read P1 and answer questions. 1 What is a tsunami? It’s a huge wave that can cause terrible damage and destruction. 5a Read P2 and answer questions. 1 Where does the name ‘tsunami’ come from? The name comes from a Japanese word meaning ‘harbour wave’. 2 What causes a tsunami? It’s usually caused by an earthquake at the bottom of the sea. 3 Why does this name come from Japanese? 4 What other causes of tsunami do you know? Sea bottom landslide, volcanic eruptions. 5 At first, the wave in the sea is quite small, but it moves very quickly. How fast is the speed of tsunamis? 500-1000 kilometers per hour. As fast as the speed of planes. 6 How high can tsunamis be? 30 metres high. 7 Put the pictures in 5c in the correct order. Answers: b 3 c 4 d 1 a 2 5a Read P3 and answer questions. 1 What have the Hawaiians done? They built a tsunami-watch station to warn people and give them time to protect themselves against the killer waves. 2 What other information can you get from this paragraph? *These giant waves can hit Japan, Indonesia, Central America and South America. *In 1960, there was a big tsunami in the Pacific Ocean. *Tsunamis don’t happen very often. We all have heard of Indonesia Tsunami in 2004. Read P4 and answer the following questions 1 When did it happen? 2 What caused it? 3 What countries did it hit? (Look at the globe and point) 4 What was the damage? 5 What did other countries do? Post-reading I  What type of article is it? Expositions(说明文) about disasters. How to write this type of article? Definition----causes---- damage---solutions Useful sentences. A Tsunami is a huge wave that… It’s usually caused by… …were killed/ destroyed/ lost/ injured/hit It was the biggest earthquake for 40