Oceanography: Ocean Relief, Currents & Tides Quiz — 7 Free Questions

Question 1

What is the term for the comparatively less common general tidal pattern, observed in certain locations such as parts of the Gulf of Mexico, in which a coastal location experiences only a single high tide and a single low tide within about a twenty-four hour period, rather than the more typical two of each?

Question 2

Besides the Gulf of Khambhat and the Gulf of Kutch, at which specific site within the Sundarbans delta of West Bengal was one of India's early, small-scale tidal power demonstration projects developed?

Question 3

What term describes the total concentration of dissolved salts present in a given quantity of seawater, generally expressed in parts per thousand, and averaging around thirty-five parts per thousand across the world's open oceans?

Question 4

Which cold ocean current, flowing generally southward along the northwestern coast of Africa and forming part of the broader clockwise circulation pattern of the North Atlantic Ocean, takes its name from a nearby group of islands?

Question 5

Which oceanic trench, located north of the island of Puerto Rico in the Caribbean region, is generally recognised as the deepest point found anywhere in the entire Atlantic Ocean?

Question 6

What is the general term for salt-tolerant trees and shrubs growing in the intertidal zone along tropical coastlines, such as India's Sundarbans, providing coastal protection and nursery habitat for marine life?

Question 7

What is the term for the fast-moving, underwater flows of dense water heavily laden with suspended sediment, which travel rapidly down a slope under the force of gravity and are considered an important factor in shaping features such as submarine canyons?

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About Oceanography: Ocean Relief, Currents & Tides

This quiz is meant for students preparing for the IAS examination and other competitive tests, and for anyone who wants a wide-ranging survey of oceanography -- the relief of the ocean floor, ocean currents and the tides. It begins with the main relief features of the ocean floor -- the continental shelf, slope and rise, the abyssal plain, oceanic trenches, mid-oceanic ridges, seamounts, guyots, atolls and submarine canyons, along with the world's major ocean basins. It then covers ocean temperature and salinity -- the thermocline, halocline and pycnocline, the factors that make seas such as the Red Sea or the Dead Sea unusually salty and the Baltic unusually fresh, and the different depth-based zones of the ocean. A third section covers ocean currents -- warm and cold currents such as the Gulf Stream, Kuroshio, Peru and Benguela Currents, ocean gyres, upwelling and downwelling, and the deep global thermohaline circulation. A fourth section covers tides -- their cause, spring and neap tides, the different tidal patterns, tidal range, tidal bores, and tidal energy, including in India. It closes with coral reefs, India's own reef systems, ocean acidification, and the Law of the Sea concepts of territorial waters and the Exclusive Economic Zone. When complete it will have one hundred and fifteen carefully checked questions, arranged in five packs of twenty-three.

Every question has four options, and the correct option can be in any position. After each question there is a detailed explanation of more than five lines, in simple Indian English that a school student can follow, giving the important terms, mechanisms and the points that examiners like to test.

Every fact has been checked against standard reference material on physical geography and oceanography.