Renewable marine energies
What are renewable energies?
☀️ The sun
💨 The wind
🌍 The heat of the Earth
💧 The rivers
🌊 The tides
Allows us to produce
⚡️ Electricity
🔥 Heat
❄️ Cold
🌫️ Gas
⛽️ Fuel
This is what we call renewable energies (EnR).
It is said that these energy sources are inexhaustible and that they create little or no waste.
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The water
Water energy = Hydraulic energy
Water helps turn turbines to create energy like water mills or dams.
The wind
When the wind blows, it turns the blades of wind turbines to produce electricity.
The sunlight
Solar panels capture sunlight to produce electricity and heat buildings, for example.
The biomass
Plant materials, such as wood or compost for example, are what we call biomass. Often these materials are burned to be able to heat themselves.
The heat of the basement
Geothermal power plants harvest heat from deep within the earth to create energy.
Now let's talk about marine renewable energies
EmR
This is the name given to marine renewable energies.
What are EmRs used for?
They make it possible to produce electricity from the forces and resources of the sea , such as swell, currents, tides, the wind blowing at sea, warm surface waters, cold deep waters, etc.
Why do we say that EmR are renewable?
Since they are constantly replenished, their stock is unlimited!
Let’s discover the different marine energies together:
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Tidal energy
It is produced by the energy of currents: the stronger the current → the greater the energy produced.
Tidal energy
The sea powers turbines that produce electricity.
Wave energy
When the wind blows on the sea, the swell travels long distances and brings energy to the coast.
Thermal energy from the seas
The temperature differences between the warm surface waters and the cold waters of the depths create energy.
Wind energy
When the wind blows, it turns the blades of wind turbines which produce energy.
Are you ready for the quiz?
Are you ready for the quiz?
Quiz: Marine renewable energies
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Fuel : Which has the property of burning.
Fossil energy : Fossil energy is that which is derived mainly from coal, oil and natural gas. They are called fossils because they come from the very slow decomposition of living elements (mainly plants) several million years ago.
Source: Vikidia
EnR : Renewable energies.
Swell: Swell is an undulating movement located on the surface of the sea.
Overseas: Territory located beyond the seas in relation to France, such as Guyana, Guadeloupe, Martinique etc…
Metropolis: The French territory of the European continent, in relation to the overseas territories.