"Earthquake" PPT download

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"Earthquake" PPT download

Part One: Information about the Tangshan Earthquake

At 3:42 a.m. on July 28, 1976, a thunderous roar came from the ground in Tangshan City, Hebei Province. The ground suddenly shook violently and an earthquake broke out. Tangshan is like a small boat in the stormy waves. This earthquake caused a total of 242,000 deaths and huge losses.

Information about the Wenchuan earthquake:

At 14:28 on May 12, 2008, a strong earthquake measuring 8.0 on the Richter scale occurred in Sichuan Province. The earthquake was clearly felt in most of the country. The epicenter was located in Wenchuan County, Aba Prefecture. The earthquake caused serious losses of life and property.

Part 2: Experimental Conclusions

Rock formations underground deform under pressure.

When the force is too great to bear, the rock formation will break suddenly and rapidly.

The seismic waves generated by the fracture of rock layers will cause vibrations on the surface when they reach the surface. This is an earthquake.

What are the signs when an earthquake occurs?

Animals had signs before the earthquake. The big cat ran away with the kitten in its mouth, and the cattle, sheep, snails and horses did not enter the pen. Birds are frightened and do not return to their nests, rabbits jump and bump into each other, fish jump in the water in panic, chickens fly up trees and pigs fly wildly, ducks do not go into the water and dogs bark wildly.

Part 3: Basic knowledge about shock absorbers

1. In a bungalow, hold your head and run outside quickly. If you are too late, hide in a narrow place such as the kitchen or bathroom or on the side of a solid object such as a table or bed. Try to protect your head as much as possible.

2. In high-rise buildings, temporarily avoid places such as restrooms, load-bearing walls, corners, etc. that can form a triangular space, and do not use elevators. Wait patiently for rescue.

3. On the street, quickly run to an open space and squat down while holding your head, avoiding high-rise buildings, overpasses, high-voltage lines, etc.

4. In the suburbs, avoid the foot of mountains and steep cliffs to prevent rolling rocks, landslides, landslides, etc.

5. When driving, quickly avoid overpasses, cliffs, telephone poles, etc., and choose an open place to park and get off the vehicle.

Keywords: Qingdao version fifth grade science PPT courseware for the second volume free download, PPT download, .PPT format;

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Update Time: 2024-11-22

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