Thitirat, Kanoknan, Nam Hoon, Punyanuch

-Energy source that have no undesired consequences-

Advantage  Wind is free  Does not cause green house gas Disadvantage  Does not produce same amount of electricity all time  Wind turbines are noisy

Advantage  Once dam is constructed, electricity can be produced constantly  Does not pollute the atmosphere Disadvantage  Very expensive  Natural environment destroyed

Advantage  Infinite supply of energy  Solar energy does not cause pollution Disadvantage  Can be used only when its day time  Very expensive

Advantage  Saves release of CO2  Renewable Disadvantage  Expensive  Requires more land

Advantage  No pollution  Direct use Disadvantage  May Release Harmful Gases  Transportation

Advantage  Lower Greenhouse Gas Emissions  Powerful and Efficient Disadvantage  Non Renewable  Nuclear Radiation

Most of the energy are expensive. This is the reason why people didn’t start using these energy even though they help us save the Earth from Global warming.