Question

The two different ways of harnessing energy from the ocean are:
A. Tidal Wave OTEC
B. Geothermal, wave energy device
C. Solar energy, point wave absorber
D. All of the above

Answer 1

Hint: Producing electrical energy is one of the most important tasks of the easy and smooth living of our society. So the energy can be developed with two kinds of sources: renewable and non-renewable sources. Renewable resources are famous for their sustainable and eco-friendly nature.

Complete step by step solution:
Renewable sources can be used again and again. These sources will never get exhausted. Types of renewable energy generation methods are solar energy, wind energy, hydro energy, tidal energy, etc.
Renewable energy systems use sources like sunlight, wind, water, natural water sources (oceans), etc.
Some of the procedures of energy production like OTEC (Ocean thermal energy conversion) and tidal wave energy systems use the naturally stored water in oceans.
OTEC (ocean thermal energy conversion):
In this method two, naturally available sources are used one is the sunlight and the other is the ocean water. This system is to produce energy by using the temperature difference between deep cold ocean water and the top warm layer of the ocean. This temperature difference is due to the presence of sunlight. The OTEC system is used to pump and circulate these two layers of water (warm and cold water) to run a power cycle and ultimately generate electrical energy.
Tidal energy:
This method has been used since the sixth-century. In this method, the tides and the current of the oceans are used to rotate a huge water wheel. Nowadays instead of wheels special kinds of turbines are used ultimately the energy is produced.
Thus, from the above discussion, we can conclude that the correct option to satisfy the question is Option A.

Note: Non-Renewable sources are sources that can get exhausted with time. Fossil fuels are the most commonly used non-renewable resources. These sources release many poisonous gases while burning. These are not considered to be eco-friendly.