Question

give ans of this que​

Answer 1

Answer:

a) The ocean can produce two types of energy: thermal energy from the sun’s heat, and mechanical energy from the tides and waves.

Oceans cover more than 70% of Earth’s surface, making them the world’s largest solar collectors.

b) Geothermal energy is heat derived within the sub-surface of the earth. Water and/or steam carry the geothermal energy to the Earth’s surface. Depending on its characteristics, geothermal energy can be used for heating and cooling purposes or be harnessed to generate clean electricity. However, for electricity, generation high or medium temperature resources are needed, which are usually located close to tectonically active regions.

Answer 2

Answer:

(a) The energy potential from sea energy is large but its efficient commercial exploitation is difficult. The following types of energies can be harnessed from the sea:

Ocean wave energy: Kinetic energy in the waves is used to generate electricity.

Ocean thermal energy: The temperature difference at different depths of ocean is converted into mechanical and then into electrical energy.

Tidal energy: The potential energy stored in the tides is used to harness electrical energy. 

(b) Geothermal energy:-

The heat from the earth is called geothermal energy. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.

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