By Kevin, Evan, Samone, David, Jerome, Denzell,

Ronald, Heather, Brittney, Briasha, Darren, Dana, Jasmine, Kayla W., Joseph and Brandon

Follow the rubric..keep up with these Only 5 slides PLEASE! 7 words, 7 bullets is VERY important Participation should be fair Content important Include class in learning process

Evan D. & Kevin C.

Solar energy is energy from the sun. Often converted into thermal or electrical

energy. Solar energy can be converted into electricity

in two ways. These two ways are Photovoltaic and Solar

Power Plants. Photovoltaic (PV devices) or “solar cells,”

change sunlight directly into electricity.

Solar Power Plants  indirectly generate electricity when the heat from solar thermal collectors is used to heat a fluid which produces steam that is used to power the generator.

Don’t forget Solar energy can also be converted to Thermal energy.

This energy can heat water for use in homes, buildings, or swimming pools.

It can also heat spaces inside greenhouses, homes, and other buildings.

Out of the 15 known Solar Electric generating units operating in the United States at the end of 2006, 10 of these are in California, and 5 in Arizona.

Solar thermal power plants use the sun's rays to heat a fluid, from which heat transfer systems may be used to produce steam.

Pro’s Solar energy is free, and it’s supplies are

unlimited. Using solar energy produces no air or water

pollution. Solar energy produces electricity very quietly. Although the initial price of solar cells may be

high, once installed, they provide a free source of electricity, which will pay off over the coming years.

Con’s The weather can affect the efficiency of solar

cells. Solar energy is only able to generate

electricity during daylight hours. Current prices of highly efficient solar cells

can be above $1000, and some households may need more than one.

By Samone Hankins

Derived from sunlight by higher state of electrons,making electricity

Pv is used to make power for solar cells. Cells protect from outside elements.More

power=more solar panels Derived by converting infrared energy directly

into energy. Research of PV doubled every 2 years, biggest of

AE. Cells electronically connect together to create PV. FACT: solar power generation has the highest

density among renewable energies.

Many countries encourage solar panels along with other support of AE.

Three leading countries make up approx.89% of total PV installations. Germany has the fastest growing PV market in ‘06 and ‘07.

FACT: Facilities can operate with little maintenance or interruptions after initial setup.

Research of PV by US leads to positive follow- ups of higher demand by other countries.

Contrast to fossil fuels, SP does not use emissions during operation BUT does produce some amount of pollution by panels.

Energy input produced higher than output results in more harmful then beneficial outcomes.

PV located near photosynthesized plants turns problems into chemical energies,hence intervenes process of a plant photosynthesis.

FACT:Solar panels are pollution free during use.

Total cost in US is total costs of cents per kilowatt-hour produced.

Panels consume 10% total capitol cost.(including maintenance and depreciation of capitol outlay over 20 years.

FACT: Compared to FF and nuclear energy, very little research (or money) has been invested in the development of solar cells, sothere is much room for improvement!)

A renewable energy source that generates electricity Uses free flowing water to generate electricity such

as dams or water falls Accounts for more than 20% of electricity uses in the

world Virtually nonpolluting

Dams can store rain water which can be used during a drought

If needed dams can be shut down instantly. Simple design makes for inexpensive repairs Water is also not damaged while going through

hydropower It is clean and prevents the burning of 22 billion

gallons of oil and 120 million tons of coal a year

A con is that dams drown wild life habitats Another is dams have caused more than 40 to 80 million

people to relocate to accommodate the rising waters Dams prevent migration off fish Damming of rivers causes many parts of rivers to go dry Changing from cold water to warm water causes the

spread of parasitic worms that cause debilitating disease

Can cause water to go from near flood levels to almost dry in a single day

Nearly 75,000 dams(6 feet high more) dot U.S. rivers

Only 2% of U.S. rivers are free flowing

New Cornelia Tailings is the largest U.S. Dam

Hydropower is clean It prevents the burning of 22 billion gallons of oil or 120 million tons of coal each year

Hydropower does not produce greenhouse gasses or other air pollution

By Denzell and Ronald

By Heather and Brittany

Biomass is a clean renewable energy resource

derived from waste of various human and natural activities.

excludes organic material

Wood the largest energy source of biomass:

Waste second largest source Alcohol third largest contributor

Main energy resource over much of human history.

20 million homes use wood for some form of heat; 5 million rely solely on wood for heat.

By Briasha and Darren

It is a fuel made from biological materials It is a renewable fuel It can be the natural gas that comes

from microorganisms It includes any solid,liquid,or gaseous

fuels from plants Burning biofuels adds less carbon to the

environment

Ethanol is one type of biofuel It is produced by carbohydrates turning

into sugar Then the sugars are fermented Another is Gasohol which is produced

from the alcohol of that process It can be burned as a fuel directly Or it can be added to gasoline

Hydrogen is a highly reactive colorless gas

It is the lightest element It is the most abundant in the universe Hydrogen can be extracted from water

by electrolysis Combustion engines use Hydrogen to

produce electricity

Conventional cars can be run on Hydrogen Hydrogen can be put in place of gasoline The only problem is there is no Hydrogen

gas on Earth If there is any trace on Earth we can not

use it This is because bacteria uses it because

it’s a excellence source of energy

By Dana Walker

Geothermal energy is derived from the Earth The largest supply is located in The Geysers 1% of world’s energy Available 24hrs a day Binary plants are most common power plants US has highest usage 90% availability

First tested in 1904 by Prince Piero Ginori Conti

First plant in US was in 1922 In 1960, Pacific Gas was the first plant

to successful use geothermal energy The Geyser produce 720 MV of power Is now generated in 20 countries

worldwide

Low temperature limits efficiency Construction of plants affect land

stability Hot water sources contain pollutants Locations may cool down after time Must be managed to avoid depletion

Requires no fuel It’s Sustainable Minimal land requirements (1-8acre per

megawatt) Can power large cities w/ small

amounts Capacity factor is large Has 3 different technologies Affordable

Geothermal energy is a growing resource for energy

It will probably go into mass production in the next couple years

More research needs to go into making it a more productive energy source

By Jasmine Barber

Tidal Power is the amount of extraordinary energy from gravitational pulls from the sun in the ocean tides.

This source of energy is pollution-free and limitless.

Tidal barrage is the procedure that scientist accumulate this amazing energy.

This when a dam is built across the mouth of a bay and turbines the flowing water will generate the energy.

When the tide shifted, the blades would reverse to collect the rest of the out-flowing water for energy.

30 locations in the world where this type of energy can be gathered.

Only 2 plants are made in those locations(Canada & France) and there is only one here in Annapolis(Bay of Fundy)

Plans to build in other places of the US are still in development.

The construction of these turbines cost a lot of money, but are still very efficient…this problem is in the hands of the government.

Tidal Power is efficient but the way it is gathered isn't.

Turbines cause a lot of environmental problems.

Including: Rocks back up in

system causing some pollution and thus marine life to suffer.

By Brandon and Joseph