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27 Cards in this Set
- Front
- Back
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Why are earthquakes common in California? |
San Andreas fault runs length of California, a conservative plate boundary |
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How many earthquakes does California suffer from each year? What is the average magnitude on the Richter scale? |
2-3
5.5 |
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What earthquake occured in 1992? |
Landers |
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How many people died in the Landers earthquake? |
3 |
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How many people were injured in the Landers earthquake? |
400 |
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What was the magnitude of the Landers earthquake? |
7.3 on the Richter scale
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When was the Loma Prieta earthquake? |
October 1989 |
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What was the magnitude of the Loma Prieta earthquake? |
6.9 on the Richter scale |
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How many people were killed by Loma Prieta? |
63 |
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How many people were injured by Loma Prieta? |
3,800 |
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How many people were killed by the Cyprus Freeway collapse in Loma Prieta? |
42 |
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How much of the Cyprus Freeway collapsed? |
2 miles |
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How many people were made homeless by Loma Prieta? |
10,000 |
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How many fires broke out due to burst pipelines in Loma Prieta? |
Over 30 |
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What was the total damage cost of Loma Prieta? |
$10 billion |
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How much funding was received to deal with the effects of Loma Prieta? |
$3 billion from US government and private investors |
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How are droughts caused in California? |
Anticyclones La Nina Increased westward blowing winds from desert areas |
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What is the worst effect of drought? |
Wildfired |
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How many people were killed in the October 2007 wildfires? How many homes were destroyed? |
22 1300 |
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Why are tsunamis common in California? |
Earthquakes in the Pacific Ocean cause tsunamis Landslides into the sea |
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How many people died in the 1964 Crescent City tsunami? |
12 |
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Why are landslides common in California? |
Triggered by earthquakes
California is built on and around steep slopes
Built on coastal land, susceptible to erosion which causes landslides |
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When was the last volcanic eruption in California? |
1915, Lassen Peak |
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How much of the population live within 50km of a fault line? |
70% |
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Why are the buildings at risk? |
Built on unstable land so susceptible to soil liquefaction which damages buildings and increases the risk of landslides |
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What is the problem with building on the coast? |
Tsunamis Erosion Landslides |
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What is the percentage of people in Los Angeles that live below the poverty line? What does this mean? |
20% Low capacity to cope |
