Download - Tidal energy
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By:Paula Alemán CabreraAdriana Gómez García
Ana Gabriela Melián Núñez
TIDAL ENERGY
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1. WHERE DOES THIS ENERGY COME FROM?• This energy comes from the tides. Tides are
caused by the gravitational pull of the moon and sun, and the rotation of the earth.
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2. IS IT RENEWABLE OR NON-RENEWABLE?
• It’s a renewable energy because the tides never stop moving.
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3. WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE?
• The movement of the water (tides) is transformed into electric energy.
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4. HOW DO WE TRANSFORM THE ENERGY?• To transform the movement of the water into
electricity:• We build a dam in a bay or estuary completely
closed.• When there is a high tide the water enters in
the bay or estuary.• Move a turbine connec- ted to an alternator that generates electric energy.
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5. ENVIRONMENTAL IMPACT
• The ecosystem where is the barrier can change the animals and plants that they are very sensitive to the changes of the environment.
• The landscape is damaged because the barrier and machines look bad and the landscape isn’t beautiful.
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6. IS IT GOOD ENERGY SOURCES FOR THE CANARY ISLANDS? WHY?
• Yes, because the tides in the Canary Islands are very amplitude and would generate a lot of electric energy.
• But, if we build a barrier in a beach, tourits wouldn’t go to the Canary Islands, because they like the beautiful beachs and weather.
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7. PROS AND CONS
PROS:• It’s auto-renewable• It doesn’t pollute• It’s noiseless• The raw material is free (the waves)• It can be in any place and in any time of the yearCONS:• It damage the coastal landscape• It depend of the amplitude of the tides• It’s expensive to move the energy• It’s bad for the plants and the animals