【正文】
or earthquakes. When the1906 earthquake happened, the pacific plate jumped 56 metres to the north. The outside of the earth is made of _______________ . Two of the earth’s plates which join together suddenly _____________ . Details Main Idea Causes of Earthquakes six different plates jump Para. 4 Fill in form Paragraph 4 Pacific plate American plate Eurasian plate Indian plate African plate Antarctic plate ★ San Francisco Paragraph 4 Pacific plate ↖ American plate San Francisco ● ’s the main idea? can we reduce the damage? something about “The Big One”? Ways of reducing damages of earthquakes and “The Big One” First, don’t build houses along the lines where two of the earth’s plates join together。 third, make the houses as strong as possible. The outside of the earth is made of a ______ of different plates. At San Francisco, the Pacific plate and the North American plate often _____. Sometimes the