Limiting The Damage Of Earthquakes

2,100 views

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
2,100
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
12
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Limiting The Damage Of Earthquakes

  1. 1. Limiting the damage of Earthquakes.
  2. 2. Prediction. <ul><li>It is hard to predict an earthquake but there are warning signs. </li></ul><ul><li>You can fire Laser Beams across the landscape to try and detect plate movement- Los Angeles do this. </li></ul>
  3. 3. Closer to the quake. <ul><li>Tiny cracks develop causing rocks to bulge, these can be detected with a tiltmeter. </li></ul><ul><li>These cracks fill with water, so water levels nearby will drop. </li></ul><ul><li>Radon gas levels will increase as it escapes from the rock. </li></ul><ul><li>Animals will start acting weirdly. </li></ul>
  4. 5. Plan <ul><li>The following is a list of how people plan for an earthquake. </li></ul><ul><ul><li>Earthquake centres where people can phone for advice. </li></ul></ul><ul><ul><li>Emergency Kits </li></ul></ul><ul><ul><li>Every 3 months schools practice earthquake drills. </li></ul></ul><ul><ul><li>All buildings must be strengthened and reinforced. </li></ul></ul>
  5. 6. Why is it so hard to predict. <ul><li>Earthquakes are very unpredictable. </li></ul><ul><li>In 1976 scientists in China predicted an earthquake would occur between 22 July and the 5 th of August. </li></ul><ul><li>They could give an actual date so they were not believed and no action was taken. </li></ul><ul><li>On the 28 th July a quake of magnitude 7.8 hit Tangshan City which killed 250 000 people. </li></ul>
  6. 7. Homework. <ul><li>i With the use of an annotated diagram explain what happens at a Destructive (Subductive) plate margin before an earthquake. </li></ul><ul><li>ii How can the impacts of an earthquake be reduced. </li></ul><ul><li>(9 Marks). </li></ul>

×