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प्रश्न
Write a brief note on sea waves.
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उत्तर
- Of all the movements of the oceans, sea waves are considered to be the strongest.
- Sea waves are ripples on water caused when winds blow over the sea.
- The height of these waves depends on the speed of wind, its duration and the direction from which they blow.
- Sometimes waves are also caused by tremors felt on the ocean floor.
- Such waves are quite destructive and called Tsunami.
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संबंधित प्रश्न
Consider the following statements.
- Most of the fishing grounds occur in areas where the continental shelf is wide.
- Fishing is well developed in warm tropical watersMixing of warm and cold currents facilitates plant nutrients for fish.
- Inland fishing became significant in India.
Assertion(A): Submarine canyons are deep gorges on the ocean floor.
Reason(R): They are mainly restricted to continental shelf, slope and rise.
Continental shelf provides good fishing ground.
Assertion (A): The Ocean water is dynamic
Reason (R): Waves and currents are in horizontal motion while tides have vertical motion.
Assertion (A): On the basis of temperature, ocean currents can be classified as warm currents and cold currents.
Reason (R): The movement of ocean current from the low latitudes towards high latitudes cause cold current.
What role is played by NIO (National Institute of Oceanography)
What do you mean by the ocean salinity?
The ocean waters are saline in nature.
Extensive deposits of Minerals and Mineral fuels are found in ______.
Assertion (A): The ocean/seawater does not contains calcium in great quantities.
Reason (R): Many of the aquatic animals with shells use the dissolved calcium in the seawater to build their protective shells.
