How to Prepare for Earthquakes Unit 6

chang's seismograph
pragragh 2
• What kind of building structure might prevent the great destruction of property?
1. an I-joint, 2. equally strong columns and horizontal beams, deep vertical support columns, 3. light roofs and strong walls. 4. .......
yushu, come on! we are praying for you and we will always be with you
Pragragh 1
• How do people predict an earthquake? By watching animals and plants for warning signs of earthquakes.
many people from different place got together to hold a memoriThe Yushu earthquake of 2010:
The little child is so pitiful that we all felt sad
pragragh 3
how should poeple prepare for an earthquake?
prepare their house:
1.check/reinforce homes … 2.place heavy objects … 3.attach cupboards & cabinets … 4.fasten doors …
prepare themselves:
.......
The end,thank you!
&:A chemical change in ground water before a quake.
Experimental data seem to indicate that the amount of radon (Rn) in the water under the surface of the Earth waxes before an earthquake.
How to Prepare for
Earthquakes
natural disasters
Flood
Hurricane
Drought
Tornado
valcano eruption
Snow
Earthquakes
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes are recorded with a seismometer. Earthquakes with magnitude 3 or lower are mostly impercitable( we may not feel it),but earthquakes with magnitude 7 can cause serious damage over large areas.
The Chengli Bridge in Tangshan crumpled during the earthquake.
The Wenchuan earthquake of 2008:
the rescuer were saving the children who have suffered from wenchuan earthquak
In China:hens refuse to enter their cages at night;snakes come out of the ground to freeze to death;dogs bark a lot. In Japan:large schools of fish swim near the surface of the water;birds are noisy and flying in an usual way.
Severe earthquakes happened in China
The Tangshan earthquake of 1976:
Tangshan People's Bank--a four-storey concrete and brick building--collapsed completely during the earthquake.