Presentation on theme: "Californias Natural Hazards Volcanoes, Landslides, and Floods Presenters: Steven, Bryan, and Leo."— Presentation transcript:
Californias Natural Hazards Volcanoes, Landslides, and Floods Presenters: Steven, Bryan, and Leo
- Earthquake triggers eruption - Pressure pushes magma up chamber - Volcano has an eruption
5 potentially ( possibility ) active volcanoes Medicine Lake – Last activity 900 years ago Mount Shasta - 1786 Clear Lake – 10,000 years ago Lassen Peak - 1921 Long Valley – 1750s Coso – 2.5 million years ago
Seismic activity near volcanoes means, might have an eruption Get breathing masks and goggles Get out of the volcanoes area
A flood is the submerging ( to put underwater ) with water of a normally dry area. Floods are caused by many things, including rainstorms, slow water run-off, earthquakes, broken dams, underwater volcanic eruptions and tsunamis, or hurricanes.
floods are a natural consequence of stream flow in a continually changing environment caused by precipitation, which is caused by weather For example, heavy snow melts, water saturated ( unable to absorb or dissolve ) ground, unusually high tides, and drainage modifications ( to change ) when combined with heavy rain can lead to flooding
Next to rivers Where there is bad weather Areas below sea level
Natural weather disaster Most dangerous flood power of a flood with incredible speed and unpredictability. Dams and levees brake
Definition: Movement of slope Important Factor: Gravity
Major Types Creep ( to slip or gradually shift position) and Slump (to fall or sink suddenly.)
Explanation of Causes Construction Environmental Man-Made
Building Drainage pipes Reforestation (the action of renewing a forest) Careful Planning: When building near slopes and hazardous areas
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