SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Social Science

Hydration comes under ______.

Mention the agents of chemical weathering.

Distinguish between

Oxidation and Carbonation

Statement: The Agents of chemical weathering are Oxygen, Carbon dioxide, and Hydrogen.
Reason: Chemical weathering is predominantly high in the hot and humid regions.

The process of dissolution of rock substances in water is ______.

This ______  generally originate from mountains.

The deepest point in the Arctic ocean is ______.

The height of the waves depends on ______.

A very long narrow depression on the ocean floor is called ______.

Consider the following statement.

1.  Sylvia Earle is a famous American oceanographer
   2. The continental shelves have extensive deposits of mineral fuels.
   3. Submarine fans are located in continental slope.
   4. Abyssal plains are otherwise called shallow sea plains.

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): 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.

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,

Assertion(A): Salinity is higher in closed ocean basins.
Reason(R): Enclosed ocean basins undergo little mixing with the open ocean.

What is Hypsometric curve?

Write a note on ONGC.

Explain the term

Isobath

Explain the term

Isohaline