Water Oceans MCQ with Answers

Question. What is the average salinity of the ocean water?
(a) 35 per thousand
(b) 350 per thousand
(c) 3.5 per thousand
(d) 3 per thousand

Answer: A

Question. Which one of the following is the smallest ocean:
(a) Indian Ocean
(b) Arctic Ocean
(c) Atlantic Ocean
(d) Pacific Ocean

Answer: B

Question. The mountains which have flat summits are known as
(a) sea mount
(b) canyon
(c) guyots
(d) ridges

Answer: C

Question. Movements of ocean water which is stream like and exist below the surface is called
(a) surface zone
(b) surface current
(c) deep current
(d) medium zone

Answer: C

Question. What is the average annual temperature of all the oceans?
(a) 17.2°C
(b) 1.72°C
(c) 17.5°C
(d) 17.0°C

Answer: A

Question. Name the deepest part of the Indian ocean.
(a) Mariana Trench
(b) Sunda Trench
(c) Tonga Trench
(d) none of the options

Answer: B

Question. Which water is salty?
(a) River water
(b) Pond water
(c) Rain water
(d) Sea water

Answer: D

Question. The average depth of continental slope varies between
(a) 2-20m
(b) 200-2,000m
(c) 20-200m
(d) 2,000-20,000m

Answer: B

Question. The factor affecting the distribution of temperature of ocean water is
(a) evaporation.
(b) precipitation.
(c) hydration.
(d) ocean currents.

Answer: D

Question. As the surface currents strike a continent they
(a) coincide
(b) deflect
(c) react
(d) isolate

Answer: B

Question. Upward and downward movement of ocean water is known as the :
(a) tide
(b) current
(c) wave
(d) none of the options

Answer: A

Question. Deep currents are generated when the density of ocean water
(a) increases
(b) decreases
(c) constant
(d) released

Answer: B

Question. The Labrador and Gulf stream are the examples of:
(a) Tides
(b) Ocean currents
(c) Tsunami
(d) Waves

Answer: B

Question. Which one of the following is not a minor relief feature in the oceans:
(a) Seamount
(b) Atoll
(c) Oceanic Deep
(d) Guyot

Answer: C

Question. How much part of the earth is covered by water?
(a) 76%
(b) 71%
(c) 7.1%
(d) 81%

Answer: B

Question. Upward and downward movement of ocean water is known as the:
(a) Tide
(b) Current
(c) Wave
(d) None of the options

Answer: A

Question. Spring tides are caused
(a) As result of the moon and the sun pulling the earth gravitationally in the same direction.
(b) As result of the moon and the sun pulling the earth gravitationally in the opposite direction.
(c) Indention in the coast line.
(d) None of the options

Answer: A

Question. The earth reaches its perihelion in:
(a) October
(b) September
(c) July
(d) January.

Answer: D

Question. The geographers have divided the oceanic part of the earth into ______ oceans.
(a) Two
(b) Three
(c) Four
(d) Five

Answer: D

Question. Salinity is expressed as the amount of salt in grams dissolved in sea water per
(a) 10 gm
(b) 1,000 gm
(c) 100 gm
(d) 10,000 gm

Answer: B

Question. In polar regions the molecules of water are
(a) closer
(b) apart
(c) bounced
(d) repelled

Answer: A

Question. The initial source of energy of wind and current is
(a) water
(b) sun
(c) gravity
(d) latitude

Answer: B

Question. Which day of the year is celebrated as Water Day?
(a) 26 January
(b) 15 January
(c) 15 August
(d) 22 March

Answer: D

Question. Along the coasts, salinity is:
(a) Lowered
(b) Increased
(c) Stable
(d) Unaffected

Answer: A

Question. The shelf typically ends at a very steep slope, called ________
(a) Halcoline
(b) Seamount
(c) Oceanic Shelf
(d) Shelf Break

Answer: D

Question. A major portion of sea level is found at:
(a) 10-12 kms below sea level
(b) 6-9 kms below sea level
(c) 3-6 kms below sea level
(d) 1-2 kms below sea level

Answer: C

Question. Heyerdahl and his crew landed on Polynesia after day
(a) 15th
(b) 97th
(c) 75th
(d) 79th

Answer: B