Post on 26-Dec-2015
Conventional Energy
Fossil Fuels
Fossil Fuels
What is a Fossil Fuel?
Fossil Fuels - energy sources that are formed over geologic time as a result of the compression and partial decomposition of organic matter
Are fossil fuels renewable or nonrenewable?
Fossil fuels are nonrenewable
Formation occurs over thousands or millions of years
Coal
What is coal?
Coal - Concentrated carbon from compressed organic material
Four different types of coal that are classified according to how it was formed
Fossil Fuels - Petroleum
What is petroleum?
Petroleum - natural crude oil found underground and on Earth’s surface
Crude Oil - a mixture of compounds of hydrogen and carbon
What is crude oil used for?
Can be burned to release energy
Refined into gasoline or kerosene
Fossil Fuels - Natural Gas
How is natural gas formed?
Natural Gas -Gases produced from bacteria that is trapped in areas that don’t require a lot of oxygen
The bacteria release methane, a component of natural gas
1.Choose a row, column, or diagonal of three concepts. Write a statement showing the connections between the terms AND giving deep meaning to each term.2. Choose another set of three terms and repeat.3. Must have 2 statements. Can have a third statement for extra credit.
Renewable Resource
Environment Fossil Fuel
Sustainable Yield Water Nonrenewable
Resource
Pollutant Petroleum Natural Resources
Alternative Energy
Alternative Energy
What is renewable energy?
Renewable Energy - energy that can be replaced
What are some examples of renewable energy?
Solar Energy
What is solar energy?
Solar Energy - Using the sun’s energy to provide energy
What are some every day things that use solar energy?
Calculators
Homes
Solar Cookers
Hydroelectric
What does the prefix “hydro-” mean?
Water
What does the suffix “-electric” mean?
Power
Hydroelectric Power - power provided by water
Renewable
Nonpolluting
Hydroelectric
Niagara Falls
Waterfall produces electricity for both the U.S. and Canada
Water from the falls is diverted into massive turbines
The turbines turn, producing mechanical energy
The mechanical energy produces electrical energy
Hydroelectric
Where else can we harvest hydroelectric power?
Oceans
Rivers
What is one problem with hydroelectric power?
Barriers (power plants) in the water can change the water level
These can also disrupt coastal and marine ecosystems
Geothermal Energy
What is geothermal energy?
Geothermal Energy - Energy produced by naturally occurring steam and hot water
Includes hot springs such as Yellowstone National Park
What can this energy be used for?
Heat, electricity, recreation
The U.S. Dept of Energy estimates that if the geothermal reservoirs in the US were developed, they could provide up to 30 times as much energy as the country uses
Geothermal Energy
What are some advantages?
There’s lots of it
It’s reliable and continuous
Pollutant-free
Are there disadvantages?
Need to monitor carefully to make sure reservoirs don’t get tapped out too fast (water must be able to be replaced and warmed up to be used again)
Water usually contains a large amount of minerals
Transportation of geothermal energy is not practical
Wind Energy
What is wind energy?
Wind Energy - The capture of wind power for human use
Have been using for over 2000 years
Recently, we use wind farms, which replace the windmills that used to pump water from underground wells
Wind turbines convert wind to mechanical energy, which then produces electrical energy
Wind Energy
Advantages?
Unlimited energy resource (especially at higher altitudes)
Wind farms can be built quickly and expanded as needed
Nonpolluting
Disadvantages?
Must have steady winds (if not, need a back-up system)
Not attractive
Interfere with birds
Noisy
Pass Out of Class
What alternative energy source would be least damaging to the environment if the required technology could be developed to harness and use it? EXPLAIN!
1.Choose a row, column, or diagonal of three concepts. Write a statement showing the connections between the terms AND giving deep meaning to each term.2. Choose another set of three terms and repeat.3. Must have 2 statements. Can have a third statement for extra credit.
Natural gas Alternative energy Sustainable yield
Traditional energy Pollutant Crude oil
Coal Petroleum Earth’s crust
1.Choose a row, column, or diagonal of three concepts. Write a statement showing the connections between the terms AND giving deep meaning to each term.2. Choose another set of three terms and repeat.3. Must have 2 statements. Can have a third statement for extra credit.
Solar energyHydroelectric
powerNatural gas
Disadvantages Renewable energy Geothermal
Nonrenewable energy
Wind energy Advantages
ABC Boxes - ENERGY!
A-B C-D E-F
G-H I-J K-L
M-N O-P QRS
TUV WXYZ 123
Presentation Expecatations
Dress - Look nice!
If you don’t own something nice, borrow something!
Practice!
Speak with authority!
Know what you are talking about!
If you don’t know, it’s okay to say “I don’t know.”
Make sure you leave time for questions
As the audience, don’t be afraid to ASK questions. You’ll need to know more for your scrapbook!