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1.	Arrange parts of ocean floor according to increasing distance from the coast. (a) continental slope, continental shelf, continental rise, deep sea plain (b) continental shelf, continental rise, deep sea plain, continental slope (c) continental shelf, continental slope, continental rise, deep sea plain (d) continental rise, continental shelf, continental slope, deep sea plain
Answer» (c) continental shelf, continental slope, continental rise, deep sea plain

2.	Which among the following statements about the North Atlantic Drift is/are correct? 1. It keeps the west coast of Northern Europe ice free. 2. It is responsible for the warm air mass which interacts with the cold air mass from the Polar region and causes rainfall in Western Europe. 3. It meets the Labrador current near Vancouver Island and causes dense fog. Select the correct answer using the code given below (a) 1, 2 and 3 (b) 1 and 2 (c) 2 only (d) 1 and 3
Answer» (b) The North Atlantic current or Drift or sea movement is a powerful warm ocean current that continues the gulf stream northeast, which stretches from Florida to north- western Europe. It moderates the chilled climate of western Europe.

3.	Which one of the following pairs is not correctly matched? (a) Kuroshio : Warm ocean current (b) Labrador : Warm ocean current (c) Benguela : Cold ocean current (d) Oyashio : Cold ocean current
Answer» (b) The Labrador Current is a cold current in the North Atlantic Ocean.

4.	Consider the following statements : 1. The Labrador current is a cold current in the North Atlantic Ocean. 2. The Falkland current is a warm current that flows along the Chile coast of South Pacific Ocean. Which of the statements given above is/are correct? (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor
Answer» (a) The Falkand current is a cold current. It flows along the Argentina’s coast in South Atlantic Ocean.

5.	Consider the following statements : 1. The Labrador current is a cold current in the North Atlantic Ocean. 2. The Falkland current is a warm current that flows along the Chile coast of South Pacific Ocean. Which of the statements given above is/are correct ? (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2
Answer» (a) The Falkand current is a cold current. It flows along the Argentina’s coast in South Atlantic Ocean.

6.	DIRECTIONS : Match List-I with List-II and select the correct answer using the codes given below the lists.List-I (Current)List-II (Ocean)(A) Agulhas(1) North Atlantic(B) Aleutian(2) South Pacific(C) Canaries(3) South Indian(D) Humboldt(D) Humboldt(a) A - 2; B - 1; C - 4; D - 3(b) A - 2; B - 4; C - 1; D - 3(c) A - 3; B - 1; C - 4; D - 2(d) A - 3; B - 4; C - 1; D - 2
Answer» (d) There are ocean currents which are found in given ocean. Agulhas is the warm current, Humboldt is cold current and Kanaries is cold current.

7.	Read the following statements and select the correct answer from the codes given below:1. Corals are mainly found in the tropical oceans.2. Corals need clean sediment free water.3. Corals are mainly found in deeper parts of the ocean.4. Rain water promotes the growth of corals.Codes: (a) 1 and 2 (b) 2 and 3 (c) 3 and 4 (d) 2 and 4
Answer» (a) Corals are mainly found in the tropical oceans. Corals need clean sediment free water. A coral polyp has a sack like body and an opening encircled by stinging tentacles called cnidae. The coral polyp uses calcium carbonate from seawater to build itself a hard skeleton and it is this limestone skeleton that protects the soft coral polyp.

8.	The horizontal distribution of temperature of ocean water is largely affected by 1. Depth of water in the ocean 2. Ocean current 3. Prevailing winds 4. Latitudes Which of the following is correct? (a) 1, 2 and 3 (b) 1, 2 and 4 (c) 2, 3 and 4 (d) 1, 2, 3 and 4
Answer» (c) The horizontal distribution of temperature of ocean water is largely affected by ocean current, prevailing winds and latitudes.

9.

Which one of the following is correctly matched? (a) Gulf of Carpentaria — Italy (b) Gulf of Sidra — Libya (c) Gulf of Po hai — Thailand (d) Gulf of Tonking — Malaysia

Answer»

(b) Gulf of Carpentaria – Australia

Gulf of Sidra – Libya

Gulf of Po hai – China

Gulf of Tonking – Vietnam

All these are names of gulfs associated with the following countries.

10.	Dolphin Challenger Ridge is located in (a) Atlantic Ocean (b) Pacific Ocean (c) Arctic Ocean (d) Indian Ocean
Answer» (a) Atlantic Ocean

11.	The direction of ocean currents is reversed with season in (a) the Indian Ocean (b) the Pacific Ocean (c) the Atlantic Ocean (d) no area on earth
Answer» (a) the Indian Ocean

12.	The term ‘Apogee’ refers to which one of the following? (a) A point in the orbit of the moon at which it is farthest from the earth. (b) A point in the orbit of the moon at which it is nearest to the earth. (c) Portion of surface of the moon opposite to the earth. (d) Portion of surface of the moon facing the earth.
Answer» (a) A point in the orbit of the moon at which it is farthest from the earth.

13.	The Red Sea is an example of a (a) folded structure (b) faulted structure (c) lava structure (d) residual structure
Answer» (b) faulted structure

14.	What is the triangular landmass that forms at its mouth when a river splits into several branches just before entering the sea? (a) Cape (b) Island (c) Estuary (d) Delta
Answer» The Right option is (d) Delta

15.	From west to east, what are the three main island groups in the Pacific called ? (a) Melanesia, Micronesia and Polynesia (b) Polynesia, Micronesia and Melanesia (c) Melanesia Polynesia and Micronesia (d) Micronesia, Polynesia and Melanesia
Answer» (a) Melanesia, Micronesia and Polynesia

16.	The exceptionally high and low tides that occur at the time of the new moon or the full moon when the Sun, the Moon and the Earth are approximately aligned is called (a) Spring (b) Fall (c) Neap (d) Diurnal
Answer» (a) Spring tides occur when the sun and moon are directly in line with the earth and their gravitational pulls reinforce each other, consequently a great flood or rush as of emotion.

17.	Which one of the following ocean currents is associated with the ‘EL NINO’ Phenomenon? (a) Humboldt (b) Benguela (c) Canaries (d) Kurushio
Answer» (a) Humboldt

18.	Consider the following statements: 1. Tides are of great help in navigation and fishing. 2. High tide enables big ships to enter or leave the harbour safely. 3. Tide prevents siltation in the harbours. 4. Kandla and Diamond Harbour are tidal ports. Which of these statements are correct? (a) 1 and 4 (b) 2, 3 and 4 (c) 1, 2 and 3 (d) 1, 2, 3 and 4
Answer» (b) Statement ‘1’ is wrong because tides are not good for navigation. Tide may cause sinking of boats and ships. High tide helps ships for enter or leave the harbour safely. Kandla and Diamond harbour are tidal ports, Diamond harbour is located on river Hugli, whereas Kandla port is at the eastern part of Gulf of Kutch, which is a natural port.