Advertisements
Advertisements
Question
What do you mean by ocean currents?
Solution
Oceans Currents: The movement of oceanic water on the surface and at the depths in a definite direction is called ocean current. Ocean currents are in clockwise motion in the northern hemisphere and in the anti-clockwise motion in the southern hemisphere.
APPEARS IN
RELATED QUESTIONS
The temperature of the ocean waters generally_______ at greater depth.
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 |
Distinguish between Spring tide and Neap tide.
Assertion (A): The Ocean water is dynamic
Reason (R): Waves and currents are in horizontal motion while tides have vertical motion.
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 energy of the falling wave water is used to turn hydro turbines to generate power.
Reason (R): Gulf of Khambat is one of the potential Tidal energy Zones.
Assertion(A): Salinity is higher in closed ocean basins.
Reason(R): Enclosed ocean basins undergo little mixing with the open ocean.
Explain the term
Isohaline
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.
Give reason for the following.
The earth is called the Blue Planet.
