课件34张PPT。 —EarthquakeUnit 4 EarthquakeWarming upSan FranciscoA beautiful cityViews of the 1906
San Francisco
Earthquake and Fire5:13 a.m. April 18th,1906floodearthquake seen from a ferry boat in the bayThe Great Firefire around the Call Buildingblocks in disorderearthquake-destroyed water pipebroken water pipesDreadful earthquake damage
in Chinatownthe destroyed churchdamaged warehouserefugees fleeing along the StreetThe Army later provided tents for refugees.poorly- built shelters250,000 people lost their homes
700 people
lost their livesA large part of the city was destroyed.A large number of buildings were burnt.housesruined homes
and pavementgroundfell onto the one belowCan you tell the reason?estroyedorningarthquakeumberurntumbereachediedhakenFill in the blankshookctobertrongestilledappenedravellingellilleduckyuckilyenterwayuildingstrongireslectricityeveralcientistsutsidelatesacificeetsuddenlyarthquakeappenedumpedtopakeureirstlongoinetterockhirdossiblealltrongcientistsiggeralluildingopulationimeseansnotherestroyed2. What will you do if an earthquake happens?1. How can we reduce the loss of the earthquake?Don’t build houses along the lines where two of the
earth’s plates join together. 3) A driver should slow down the car or bus then stop driving, a passenger should catch the armrest tightly.Discussions2) Build houses on rock not on sand.3) Make the houses as strong as possible.4) Experience, forecasts and technology are very important. If you stay indoors, you may hide under a desk or other
furniture, in the corner, in a small kitchen or a toilet.
It’s dangerous to jump downstairs.2) If you stay outdoors, keep away from the electrical
lines and walls, run to the open field(旷野)。SummaryEarthquakes are terrible. But we
must help ourselves! Nothing in
the world is impossible for a
united human society!退出The end