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Ocean Floor

38 MCQ questions with answers and explanations · page 1 of 2

Test yourself▶ 25 question test

Q1. What percentage of the total Earth's surface is covered by water?

  1. A0.29
  2. B0.71
  3. C0.75
  4. D0.79
Show answer & explanation

Answer: B) 0.71

Q2. What is the percentage of extension of the ocean in the Northern Hemisphere?

  1. A0.6
  2. B0.63
  3. C0.607
  4. D0.809
Show answer & explanation

Answer: C) 0.607

Q3. What is the percentage of expansion of the hydrosphere in the Southern Hemisphere?

  1. A0.6
  2. B0.63
  3. C0.809
  4. D0.828
Show answer & explanation

Answer: C) 0.809

Q4. Which is the correct order of ocean floors when moving from continents to oceans?

  1. AContinental shelf, deep sea plain, continental shelf, oceanic trench
  2. BDeep sea plains, oceanic trenches, continental shelf, continental shelf
  3. CContinental Shelf, Continental Shelf, Deep Ocean Plain, Ocean Trench
  4. DContinental shelf, continental shelf, deep ocean plain, oceanic trench
Show answer & explanation

Answer: D) Continental shelf, continental shelf, deep ocean plain, oceanic trench

Q5. What is the area with a steep slope towards the sea called?

  1. Aoceanic trench
  2. Bdeep ocean slope
  3. Ccontinental shelf
  4. Dcontinental shelf
Show answer & explanation

Answer: D) continental shelf

Q6. It is situated between the continental shelf and the deep ocean plain-

  1. Acontinental shelf
  2. Boceanic trench
  3. Ccontinental shelf
  4. Dnone of these
Show answer & explanation

Answer: A) continental shelf

Q7. What is the correct descending order of the following based on decreasing area? 1. Deep ocean plains 2. Continental submerged slopes 3. Oceanic trenches 4. Continental submerged coasts

  1. A1,2,3,4
  2. B1,4,2,3
  3. C1,2,4,3
  4. D1,4,3,2
Show answer & explanation

Answer: C) 1,2,4,3

Q8. What percentage of the total oceanic area is covered by the continental shelf?

  1. A0.065
  2. B0.075
  3. C0.085
  4. D0.095
Show answer & explanation

Answer: B) 0.075

Q9. Which of the following statements about the continental shelf is false?

  1. AIt is structurally a part of the continent.
  2. BIts average depth is about 200 meters.
  3. CIts maximum extent is in the Pacific Ocean.
  4. DIts average slope is about 1⁰ Is
Show answer & explanation

Answer: C) Its maximum extent is in the Pacific Ocean.

Q10. In which ocean is the largest extent of continental shelf found?

  1. Apacific ocean
  2. BAtlantic Ocean
  3. CIndian Ocean
  4. DArctic Ocean
Show answer & explanation

Answer: B) Atlantic Ocean

Q11. Most of the fish and other sea food are obtained mainly from-

  1. Afrom the continental shelf
  2. Bfrom the continental shelf
  3. Cfrom the continental rise
  4. Dfrom the deep sea
Show answer & explanation

Answer: A) from the continental shelf

Q12. In which ocean is the world's widest continental shelf located?

  1. Apacific ocean
  2. BArctic Ocean
  3. CAtlantic Ocean
  4. DIndian Ocean
Show answer & explanation

Answer: B) Arctic Ocean

Q13. The submerged part of the land which is connected to the continent and is not more than 600 feet deep is called-

  1. Acontinental shelf
  2. Bcontinental shelf
  3. CContinental islands
  4. Dcoral island
Show answer & explanation

Answer: A) continental shelf

Q14. The areas where mountains are found along the coast are continental shelf.

  1. Awide enough
  2. Bnarrow
  3. Ccut-and-trimmed
  4. Dshallow
Show answer & explanation

Answer: B) narrow

Q15. What percentage of the world's total production of mineral oil and natural gas comes from the continental shelf?

  1. A0.1
  2. B0.2
  3. C0.25
  4. D0.4
Show answer & explanation

Answer: B) 0.2

Q16. Which of the following statements regarding the continental shelf is false?

  1. AIt is located between the continental shelf and the oceanic deep plain.
  2. BIts depth ranges from 200m to 2000m and its average slope is 2⁰ is 5⁰
  3. CIt is called the last boundary of the continents.
  4. Dnone of these
Show answer & explanation

Answer: D) none of these

Q17. What percentage of the total ocean area is covered by the continental shelf?

  1. A0.055
  2. B0.065
  3. C0.075
  4. D0.085
Show answer & explanation

Answer: B) 0.065

Q18. What percentage of the total ocean area is covered by deep oceanic plains?

  1. A0.71
  2. B0.76
  3. C0.8
  4. D0.82
Show answer & explanation

Answer: B) 0.76

Q19. In which ocean is the largest extent of deep sea plain found?

  1. Apacific ocean
  2. BAtlantic Ocean
  3. CIndian Ocean
  4. DArctic Ocean
Show answer & explanation

Answer: A) pacific ocean

Q20. Which of the following statements is correct regarding the Deep Sea Plain?

  1. AIt covers approximately three-fourths of the total oceanic area.
  2. BIts depth is 3000 to 6000 meters.
  3. CIts maximum extent is found between 20° North latitude and 60° South latitude.
  4. Dall of the above
Show answer & explanation

Answer: D) all of the above

Q21. Which ocean has the largest number of oceanic trenches?

  1. Apacific ocean
  2. BAtlantic Ocean
  3. CIndian Ocean
  4. DArctic Ocean
Show answer & explanation

Answer: A) pacific ocean

Q22. How many ocean trenches have been discovered so far in all the oceans of the world?

  1. A19
  2. B32
  3. C51
  4. D57
Show answer & explanation

Answer: D) 57

Q23. What is the general depth of oceanic trenches in meters?

  1. A5000
  2. B5500
  3. C7000
  4. D10000
Show answer & explanation

Answer: B) 5500

Q24. The deepest oceanic trench in the world is-

  1. ATonga
  2. BMariana
  3. CPhilippine
  4. DKermadec
Show answer & explanation

Answer: B) Mariana

Q25. The deepest point in the ocean is the Mariana Trench in the Pacific Ocean, which is-

  1. A9,200 meters below sea level
  2. B10,500 meters below sea level
  3. C11,022 m below sea level
  4. D11,500 meters below sea level
Show answer & explanation

Answer: C) 11,022 m below sea level

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