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2nd Unit Test, Std-6th, Sub- Geography, 6. Importance of Oceans., Vocabulary:, Tributaries- A River or stream flowing into a larger river or lake., Groundwater- A large artificial lake., Abundant- In large quantities, Sediment- Matter that settles at the bottom of a liquid., Decompose- Decay or spoil., Corals- Marine invertebrates., Q1. Find the odd man out:, Shell, fish, crab, ship, Ans: Ship, Arabian Sea, Mediterranean Sea, Dead Sea, Caspian Sea., Ans: Dead Sea, Sri Lanka, India, Norway, Peru, Ans: Sri Lanka, Southern Ocean, Indian Ocean, Pacific Ocean, Bay of Bengal., Ans: Bay of Bengal, Natural gas, salt, gold, manganese., Ans: Natural gas, Q2. Write the answers:, Which items does man get from the oceans?, Ans: Man gets the following items from the oceans:, (1) Minerals like iron, lead, cobalt, sodium, manganese, chromium, zinc, etc., (2) Precious items like pearls and corals and ornamental items like shells., (3) Mineral oil and natural gas., (4) Food items like prawns, clams, crabs, seer fish, mackerel, pomfret, Indian shark, and Indian salmon, etc. and medical plants., Why is it economic to carry out transport by waterways?, Ans: (1) By waterways, bulky materials like coal, crude oil, raw materials, metallic, materials, food grains, etc. can be transported with ease., (2) Water transport carried out along ocean currents, accelerates the speed of ships, and also saves fuel to a considerable extent. Therefore, it is economic to carry out, transport by waterways., Why is there a difference in the climates of regions close to the oceans and regions far away from the oceans?, Ans: In regions close to the oceans, seas or large reservoirs, there is not much of a difference, in the temperatures during the day. There are differences in the temperatures of, different places on the earth. There is also a difference in the maximum and, minimum temperatures. This difference is less in the coastal areas while it is more in, the regions far from the sea. Places far from the sea get less heat since there is very, little water vapor released through evaporation since there are no water bodies., Which continents are located along the coast of the Pacific Ocean?, Ans: The continents of North America, South America, Asia and Australia are located along, the coast of the Pacific Ocean.