Question

Describe two ways of getting useful energy from water of oceans.

Answer 1

Two ways of getting energy from the ocean's water:

Tidal energy:

1. The tidal energy is harnessed from the tides in the ocean water.
2. Water flows through a turbine set in a dam-reservoir arrangement during high tide.
3. Water flows back to the ocean, passing through the turbine during low tides.

Wave energy:

1. As wind passes above the surface of water bodies waves are created.
2. Air is compressed as the water moves in the oscillatory water column.
3. Compressed air is used to rotate the turbine.