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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
Which of the following indicates the correct sequence of the topography beneath the surface of the sea?
Match the following:
| 1. | Mariana trench | Decreases salinity in the oceans |
| 2. | Great Barrier Reef | Along the coast of Japan |
| 3. | Spring tides | Deepest point in the Pacific |
| 4. | Heavy rains | Australia |
| 5. | Kuroshio current | Second order landform |
| 6. | Continental slope | On full and new moon days |
The deepest point in the Arctic ocean is ______.
The height of the waves depends on ______.
Assertion (A): The gravitational pull of the sun and moon on earth cause tides on sea water.
Reason (R): Neap tides are caused when the first and last quarter moon appears.
Assertion (A): The mid ocean ridge is probably the most extensive single feature of the earth’s topography.
Reason (R): The Mid – Atlantic Ridge is the largest unbroken oceanic ridge,
The ocean waters are saline in nature.
Assertion (A): Ocean currents are in clockwise motion in the Northern Hemisphere and in the anti-clockwise motion in the Southern hemisphere.
Reason (R): The movement of ocean currents from high latitudes to low latitudes is called warm currents.
Give reason for the following.
The earth is called the Blue Planet.
Give reason for the following.
Oceans are the lifelines of Earth and Mankind.
