Transcript California Geology - Etna FFA Agriculture

California Geology
Standards
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Students will know the resources of major
economic impact in California and their relation
to California's geology
Students will know the principal natural hazards
in different California regions and the geologic
basis of those hazards
Students will know the importance of water to
society, the origins of California's fresh water
and the relationship between supply and need
California's Natural Resources
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Water
Southern part of the state has 2/3 the
population and 1/3 the water
Water is transferred from the North to the
South
Los Angeles Aqueduct
Colorado River Aqueduct
California Aqueduct
Shasta Lake
Sacramento
River
Lake Tahoe
ER
SI
Peripheral
Canal
(proposed)
Lake
Oroville
Sacramento
A
R
A
EV
N
San Joaquin
River
A
D
San Francisco
Bakersfield
Los Angeles
Salton Sea
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To support its growing population and highly
productive agriculture
Constructed infrastructure of dams, water
diversions, aqueducts, canals and water storage
reservoirs.
80% of water goes to Agriculture Production
Water Issues
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Water resource issues in California involve
both water supply and water pollution
Cities, farmers and environmentalists have
battled over who will control California 's
water.
Fundamental controversy surrounding
California 's water supply is one of
distribution.
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Within California, there are two major arteries serving
as the sources of surface water for urban and
agricultural areas: The Sacramento-San Joaquin Delta
(Bay-Delta) and the Colorado River.
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Sacramento-San Joaquin Delta (Bay-Delta
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Serves 2/3 the population or 22 million people
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California ’s population currently is estimated at 35.5
million, and is projected to hit 49.3 million by 2025.
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Decades-long conflicts between competing interests
over the use of available supplies have been brought on
by the state's swelling population and periods of
drought.
San Francisco Bay Delta Area
Biodiversity/ Habitat Conservation
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CALIFORNIA IS ONE OF the most
biologically diverse areas in the world.
California is very rich in biological diversity,
but a growing human population and resulting
habitat destruction are threatening many
ecosystems and species.
One approach to balancing the conservation of
at least some ecosystems with increasing urban
development is the controversial Habitat
Conservation Plan, authorized by the
Endangered Species Act.
Energy
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California uses a variety of energy sources,
including petroleum, natural gas, geothermal,
hydroelectric, nuclear, and increasing amounts
of renewable and alternative fuels, such as solar
and wind energy.
California has a very diverse mix of fuel sources
and technologies--one of the most balanced in
the world.
Energy
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California is also a leader in energy efficiency.
The state has placed a priority on energy
efficiency in buildings and appliances
California is 49th in energy consumption among
the 50 states: that is, we use less energy per
person than almost all the other states in the
U.S., despite our prosperous and diverse
economy.
Energy
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In terms of energy use, about half the energy
(49%) goes to transportation, about a quarter
(27%) for industrial use, and the rest for
commercial and residential uses.
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Petroleum (51%) of the primary energy
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Primary energy is energy that is used directly, for
instance, as fuel in cars).
Natural gas was second (34%)
Nuclear (6%),
Hydroelectric (5%),
Geothermal (3%),
Coal (1%)
California produces about 45% of the energy,
including about half the petroleum used, and
17% of the natural gas.
Review Sheet
Separate Sheet of Paper
Collect
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Under the heading CALIFORNIA’S NATURAL
RESOURSES describe how water is a vital resource.
What 2 issues does Ca. water resource involve?
What groups have battled for control over Ca. water?
Name the 2 major arteries for surface water.
List 5 ways Ca. receives its energy.
What else is Ca. a leader of?
Describe in terms of energy use how much and what
the energy goes to.
What is the primary energy source?
What are Natural Disasters?
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A natural disaster is a natural event with
catastrophic consequences for living things in
the vicinity. The human death toll resulting from
natural disasters, however, depends on many
factors which are not "natural" - emergency
preparedness, for example.
What types of natural disasters occur
in California?
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Landslides
Volcano Eruption
River Flooding
Earthquakes
Wildfires
Billion
Dollar
Weather
Disasters
1980-2007
Earthquakes
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Earthquakes occur in tectonic boundaries.
California has three tectonic plates come
together.
Pacific Plate
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North American Plate
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West Section of California ( SF to Imperial)
East part of California
Gorda Plate
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Northern part of California
Plate Boundary Map
What are Faults?
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Faults are fractures along plates where
movement occurs.
Well known faults in California
San Andreas Fault
 Ellsinore
 San Jacinto
 Hayward Fault
 Calaveras Fault
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Volcanoes
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California several active and potential active
volcanoes
Northern California- Cascade Range
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Mt Shasta and Lassen peak
Eastern Sierra- Long Valley
Tsunami
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Seismic sea waves caused by fault movement.
Since seismically active area possibility of a
tsunami
Along the Cascadia subduction zone
Floods
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Floods are the stage at which rivers or dams
over flow. It causes a sufficient magnitude of
water to cause considerable flooding of land and
roads and/or threat of significant hazard to life
and property
Flood Stages
Wildfires
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Common in California, Natural part of the
environment here
Mediterranean type climate- growth of plants
winter and spring, dry out in summer
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More growth equals more fuel
Plants adapt to regrow after fires
Fires natural caused by lightning
Following a fire the following usually happensflooding, erosion, and landslides
Landslides
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The down slope movement of soil and/or rock
An abrupt movement of soil and bedrock
downhill in response to gravity. Landslides can
be triggered by an earthquake or other natural
causes. Undersea landslides can cause tsunamis.
Caused by an
Earthquake
Landslides
Review Sheet
Separate Sheet of Paper
Collect
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What are natural disasters?
List the different types of natural disasters that
occur in California, explain each, and give an
example of each.