Wave energy - class-IX
Description: wave energy | |
Number of Questions: 17 | |
Created by: Blackmamba | |
Tags: energy : forms and sources physics world energy needs energy management work and energy energy production sources of energy |
Energy potential from various sources of sea is ____. Efficient commercial exploitation of same is _______.
Full form of OCTEC is:
Rise of ocean level is called ________ and fall of ocean level is called ________
If ocean thermal energy is made feasible and cheaper, it has tremendous potential because:
From below which is the type of energy from sea?
What is known as Ocean thermal energy?
What are built near seashores to collect water which comes during high tide?
Waves are used to rotate ____________ to generate electricity. Fill in the gap.
The two different ways of harnessing energy from ocean are :
Renewable source of energy is
At many places in the ocean, the different in temperatures between the water 'at the surface of ocean' and 'at deeper levels' is up to
Arrange the following steps of conversion of ocean thermal energy into electricity, in a proper sequence.
(a) The vapour of ammonia or CFC is passed over the turbines of generators.
(b) The hot water from the ocean is used to vapourise the liquid like ammonia or CFC.
(c) Cold water from the ocean depths is used to cool the vapour again into liquid.
(d) This cold liquid is again vapourised and the process continues.
Tidal energy is a major source of energy due to the presence of large water bodies on the earth.
_________ are used to produce energy in OTEC.
Which of the following is not a form of oceanic energy?
Energy available from the oceans is
The oceans cover almost ...... percent of the surface of earth with water and act as a vast collector of ...... energy.