Disadvantages

Flaws in our brilliant ideas…

By: Jessica

FOSSIL FUELS

FOSSIL FUELS

+ Contributes to Global Warming

+ Acid rains

+ Availability of fuels

+ Prices may be inconsistent

NUCLEAR (URANIUM FISSION)

NUCLEAR (URANIUM FISSION)

+ Scarcity + Non-renewable

resource+ Workers are in danger

if work too long

+ H2O used for cooling becomes radioactive

+ Mining to getting U+ Wastes need to be

disposed of somewhere“Natural RADON

Water 25¢”

NUCLEAR (PLUTONIUM FISSION)

NUCLEAR (PLUTONIUM FISSION)

+ Need place for wastes+ Could lead to uncontrolled reaction+ More radioactive, compared to

Uranium

NUCLEAR (FUSION)

NUCLEAR FUSION

+ Difficult process; many countries gave up

+ Short reaction; won’t produce much+ Need place for wastes + "Some optimal reactors require rare

fuel, like He-3”

SOLAR (PHOTOVOLTAIC)

SOLAR (PHOTOVOLTAIC, OR PV)

+ Used only during day

+ Affected by:– cloudy day– rainy day

+ More costly, when compared to Solar Heating Panel

SOLAR (SOLAR HEATING PANEL)

SOLAR HEATING PANEL

+ Used only during the day+ Affected by:

– cloudy day– rainy day

+ Need space+ Inefficiency from converting solar energy

! Photovoltaic Cell: Sun → Electricity! Solar Heating Panel: Sun → Directly

warms water

HYDROELECTRIC

HYDROELECTRIC

+ Affect mobility of fish (especially during migration) 16million → to 30,000 fish!

+ Supersaturation of air into water+ Formation of Scour holes+ Land lost, and people must move from that area+ Can lead to disasters: + Only used in areas near water

WHAT’S A SCOUR HOLE?

Effect similar to Bridge Scour, the constant force of water hitting the bottom creates these

holes, and it could make the dam collapse. Water is indeed powerful.

WIND

WIND

+ Wind may be too weak+ Yields less energy, when compared

to other methods+ Turbines are costly+ Takes space+ Contributes to noise pollution

$35,000-$50,000

is the cost of a turbine

that would power an average home in America.

WAVE

WAVE

+ May be too weak; need to be strong enough

+ Sustainable site needed

COST, COST, COST… BUT REALLY HOW MUCH IS A

LOT?

Power Plant

Wind

Coal

Natural Gas

48 50 52 54 56 58 60

59.3

55.6

53.1

52.5

Cost of obtaining electricity through dif-ferent methods

Cost ($) / MWH

THANK YOU FOR

WATCHING!