Ecology
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Transcript of Ecology
ECOLOGY
13. WHAT ARE SOME WAYS TO CONSERVE ENERGY?
Turn off lights when you leave the room.
Unplug electronics when not in use.
If it’s yellow keep it mellow, if it’s brown flush it down Use rain water
Water plants at night
14. LIST AL L THE ALTERNATIVE ENERGY RESOURCES THAT ARE RENEWABLE AND GIVE ADVANTAGES AND DISADVANTAGES
A. SOLAR ENERGY energy from the sun in the form of
radiation.
Solar power plants that can produce large amounts of electricity instead
of for one house.
ADVANTAGES AND DISADVANTAGES OF SOLAR ENERGY- 2 OF EACH
Advantages: Can be used directly for heat Doesn’t produce pollution
Disadvantages: Expensive to set up We do not have the correct technology to
produce enough electrical energy that we need
B. HYDROELECTRICITY
electrical energy produced from falling water.
Spins a turbine
Buford Dam at Lake Lanier
Buford Dam at Lake Lanier
WHAT ARE THE ADVANTAGES AND DISADVANTAGE OF HYDROELECTRICITY?
3 OF EACHAdvantages include:
Causes little pollution Gives off significant amounts of energy Could reduce the amount of fossil fuels used
Disadvantages of include: You must be near a water source You must build dams and they create erosion
problems and decrease water quality Large numbers of fish die due to dams as
well as destroys forests and wildlife habitats
C. GEOTHERMAL ENERGY Energy found deep
within the earth; usually comes to the
surface of the earth as geysers, natural vents, or wells drilled in rocks.
WHAT IS THE ADVANTAGE AND DISADVANTAGES OF WIND ENERGY?
Advantages: - 2 can generate significant amounts of energy Doesn’t cause pollution
Disadvantages:- 1 Unreliable due to wind that isn’t strong enough or
frequent enough to depend on
D. WIND ENERGYEnergy that is an indirect form of solar energy
through unequal heating of air. To harness wind energy you need windmills. Windmills put
together are called wind farms
•Wind is free, wind farms need no fuel.
•Produces no waste or greenhouse gases.
•The land beneath can usually still be used for farming.
•Wind farms can be tourist attractions.
•A good method of supplying energy to remote areas.
•The wind is not always predictable – some days have no wind.
•Suitable areas for wind farms are often near the coast, where land is expensive.
• Noisy. A wind generator makes a constant, low, "swooshing" noise day and night. An entire wind farm makes quite a racket!
•Can kill birds - migrating flocks tend to like strong winds. Splat!
E. NUCLEAR ENERGYThe energy released by a
fission or fusion reaction between atoms.
WARNING: NOT RENEWABLE
WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF NUCLEAR ENERGY?
Advantages: (1) Very powerful
Disadvantages: (2) Produce dangerous radioactive wastes Needs special environments to be safe
ADVANTAGES AND DISADVANTAGES OF BIOMASSAdvantage: (1)it is renewable and can be inexpensive.
Disadvantage: (2)it requires land to grow it does not produce enough energy to keep up with our needs.
F. Biomass – Fuels made from once living material.
Biomass is the second most common form of renewable energy.
15. EXPLAIN THE DIFFERENCE BETWEEN RENEWABLE AND NONRENEWABLE RESOURCES
Renewable resources can be
replaced within our lifetime while nonrenewable
resources can not.
16WHERE DOES THE ENERGY CONTAINED IN . FOSSIL FUELS COME FROM?
energy originally from the sun that
has been absorbed by living organisms
PLATETECTONICS
17. LAYERS OF THE EARTH FROM INSIDE OUT
Inner CoreOuter Core
Mantle(Asthenosphere)
(Lithosphere)Crust
18. WHEN OCEANIC CRUST AND CONTINENTAL CRUST CONVERGE
Subduction occurs and Volcanos are usually formed.
Oceanic is MORE DENSE
all from: http://www.geo.lsa.umich.edu/~crlb/COURSES/270
19. WHAT DO CONVECTION CURRENTS IN OUR MANTLE CAUSE?
The movement of tectonic plates
20. WHAT DID ALFRED WEGENER’S NAME OF SUPERCONTINENT.
Pangaea
21. SEA-FLOOR SPREADING
The process by which new lithosphere forms as
magma rises toward the surface of the oceanic
crust and solidifies. This usually takes place at the
mid-ocean ridge.
: www.ocean.udel.edu
The Mid-Ocean Ridge system, shown above snaking its way between the
continents, is more than 56,000 kilometers (35,000 mi) long. It circles the earth like
the stitching on a baseball!
SEA-FLOOR SPREADING
m.y. means million years ago
Notice this compass.
http://platetectonics.pwnet.org/img/blocks.gif
22. WHAT ARE THE THREE TYPES OF PLATE BOUNDARIES?
1. Convergent – where plates are moving toward one another
2. Divergent – where plates are moving away from one another
3. Transform – where plates are sliding horizontally past one another
WHAT TYPE OF LANDFORMS DO THE PLATE BOUNDARIES CREATE?
1. Convergent- mountains, volcanoes, trenches, islands
2. Divergent- rift valleys, midocean ridges
3. Transform- earthquakes and faults
A. CONTINENTAL &
CONTINENTAL
mountains
from: http://www.geo.lsa.umich.edu/~crlb/COURSES/270
a. Continental crust to continental crust
Example: India-Asia (Himalayas)
Before collision
After collision
MOUNTAINS
B. CONTINENTAL &
OCEANICSUBDUCTION
The process by which the
ocean floor sinks beneath a deep-ocean
trench and back into the
mantle is called
C. OCEANIC &
OCEANIC
SUBDUCTION
DIVERGENT BOUNDARIES
The place where two plates move apart or diverge is called a divergent boundary.
Continental crust diverging from continental
TRANSFORM BOUNDARIES
A transform boundary is a place where two plates slip past each other, moving in opposite directions.
San Andreas Fault in California