Non-Conventional Source of Energy Energy from the Sea

The video discusses the depletion of Earth's natural energy resources and explores alternative energy sources from the ocean. It covers wave energy, which uses the motion of waves to generate electricity, tidal energy that harnesses the gravitational pull of the moon, and ocean thermal energy conversion (OTEC) that utilizes temperature differences in ocean water. Each method's process and limitations are explained, highlighting the potential of the sea to provide eco-friendly energy solutions.

What type of energy do ocean waves primarily possess?

• Thermal energy

• Potential energy

• Kinetic energy

• Electrical energy

What is a key limitation of wave energy?

• Waves need to be strong enough

• It requires sunlight

• It is non-renewable

• It depends on wind speed

How is electricity generated using tidal energy?

• By using solar panels

• By using wind turbines

• By using tidal dams and turbines

• By using geothermal plants

Why is tidal energy considered renewable?

• Because it relies on wind

• Because it uses fossil fuels

• Because the moon will always create tides

• Because it uses solar power

What is the minimum temperature difference required for OTEC to work?

• 10 degrees centigrade

• 25 degrees centigrade

• 15 degrees centigrade

• 20 degrees centigrade

What liquid is commonly used in OTEC power plants?

• Ammonia

• Water

• Methanol

• Ethanol

How do OTEC plants generate electricity at night?

• By storing solar energy

• By using wind energy

• By being located in tropical waters with stable temperatures

• By using geothermal energy