Oceanography MCQS for NTA UGC NET on the Chapter Temperature and Salinity, NTA UGC NET Geography MCQS, Temperature Questions from Oceanography, MCQS from Salinity NTA UGC NET
TEMPERATURE AND SALINITY
Q. 1. Which of the following thermometers is needed to measure temperatures at different depths of the ocean?
(a) Reversing thermometer
(b) Simple thermometer
(c) Thermographs
(d) None of the above
Answer: a
Q. 2. Which of the following layers of ocean characterized by rapid rate of decrease of temperature with increasing depth?
(a) The top layer
(b) The thermocline layer
(c) The third layer
(d) The bottom layer
Answer: b
3. The major source of temperature of the oceanic water is the
(a) Central point of the earth
(b) Volcanic eruption
(c) Black body radiation
(d) Sun
Answer: d
4. The daily range of temperature of surface water of the ocean is around
(a) 30⁰ C only
(b) 20⁰ C only
(c) 1⁰ C only
(d) 0 ⁰ C only
Answer: c
Q. 5. On an average, the maximum and minimum temperatures of surface sea water are recorded at
(a) 2-P.M. and 5 A. M. respectively
(b) 1 P. M. and 6 A. M. respectively
(c) 12 Noon and 7 A. M. respectively
(d) 12.30 P. M. and 8 A.M. respectively
Answer: a
Q. 6. In all the oceans, the highest value of the surface temperature is found to the
(a) North of Tropics
(b) North of Equator
(c) South of Tropics
(d) South of Equator
Answer: b
Q. 7. The warmest water as estimated by Krummel is found at
(a) 10 ⁰ S latitude
(b) 5 ⁰ S latitude
(c) 10 N latitude
(d) 5 ⁰ N latitude
Answer: d
Q. 8. Which of the following ocean bodies has the warmest surface water equal to an average of 19.10°C?
(a) Indian Ocean
(b) Atlantic Ocean
(c) Pacific Ocean
(d) Antarctic Ocean
Answer: c
Q. 9. The maximum and minimum annual temperatures of ocean water are recorded in
(a) August and February respectively
(b) July and January respectively
(c) June and December respectively
(d) May and November respectively
Answer: a
Q.10 Which of the following oceans record relatively higher annual range of temperature?
(a) Arctic Ocean
(b) Indian Ocean
(c) Pacific Ocean
(d) Atlantic Ocean
Answer: d
Q.11. Which of the following factors affect distribution of temperature of ocean water?
(a) Latitudes
(b) Unequal distribution of land and water
(c) Prevailing winds
(d) All of the above
Answer: d
Q.12. Which of the following currents raises the temperature near the eastern coasts of North America and the western coast of Europe?
(a) Brazil current
(b) Gulf stream
(c) North Atlantic current
(d) Florida current
Answer: b
Q. 13. On an average the temperature of surface water of the oceans is
(a) 26.7°C
(c) 28.7°C
(b) 27.7° C
(d) 29.7 °C
Answer: a
Q. 14. The rate of decrease of temperature with increasing latitudes is generally
(a) 2⁰ F
(c) 1⁰ F
(b) 1.5⁰ F
(d) 0.5⁰ F
Answer: d
Q. 15. The average annual temperature of all oceans is
(a) 21.2⁰ C
(b) 19.2⁰ C
(c) 17.2 ⁰ C
(d) 15.2 ⁰ C
Answer: c
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Q. 16. The average annual temperatures for the northern and southern hemisphere are
(a) 17.4 ⁰C and 14.1 ⁰C respectively
(b) 19.4 ⁰C and 16.1 ⁰C respectively
(c) 21.4⁰C and 19.1 ⁰C respectively
(d) 23.4 ⁰C and 20.1 ⁰C respectively
Answer: b
Q.17. The variation of temperatures in the northern and southern hemispheres is because, of
(a) Unequal distribution of land and water
(b) Different rate of evaporation
(c) Variation in rainfall
(d) Unequal distribution of sun rays
Answer: a
Q. 18. The average temperature between 50⁰ N to 70 ⁰ N latitudes is recorded as
(a) 20 ⁰ C
(b) 15 ⁰ C
(c) 10 ⁰ C
(d) 5 ⁰ C
Answer: d
Q.19. The decrease of temperature with increasing latitudes is more pronounced in the
(a) North Atlantic Ocean
(b) South Atlantic Ocean
(c) North Pacific Ocean.
(d) South Pacific Ocean
Answer: b
Q.20. The highest temperature of the oceans are recorded near
(a) African coast
(b) New Scotland and in the Western Pacific Ocean
(c) Australian coast and Southern Pacific Ocean
(d) Arabian Sea
Answer: b
Q.21. The highest temperature of the Indian Ocean is recorded in
(a) Japan Sea
(b) China Sea
(c) Arabian Sea and Bay of Bengal
(d) Arafura Sen
Answer: c
Q.22. The western side of Equatorial Pacific Ocean shows high temperature due to powerful
(a) South equatorial current
(b) Counter equatorial current
(c) Kuroshio current
(d) East Australian current
Answer: a
Q. 23. Red Sea has high temperature in the south due to
(a) High evaporation
(b) Mixture of open ocean water
(c) Low rainfall
(d) Dry weather
Answer: b
Q. 24. The temperature in Persian Gulf is lower than in Indian Ocean due to
(a) Cold current
(b) Cold wind
(c) Low latitude
(d) Contact with cold land area
Answer: d
Q. 25. The average seasonal temperatures of surface water of the oceans have been represented through
(a) Isobath
(b) Isohytes
(c) Isotherms
(d) Isobar
Answer: c
Q. 26. A relation exists between the isotherms and
(a) The currents of the ocean.
(b) The wind system.
(c) The surrounding area
(d) The latitudinal location
Answer: a
27. Sea fogs are very common in the
(a) Tropics
(b) High latitudes
(c) Equator
(d) Poles
Answer: b
Q. 28. The solar rays very effectively Penetrate upto …….. depth in the oceans.
(a) 50 m
(b) 40 m
(c) 30 m
(d) 20 m
Answer: d
Q. 29. The temperature of water falls very rapidly upto the depth of ………… metres in the oceans.
(a) 400
(b) 300
(c) 200
(d) 100
Answer: c
Q. 30. Photic or Euphotic zone represents the upper surface of the ocean upto the depth of …………. metre and receives solar radiation.
(a) 200
(b) 250
(c) 300
(d) 350
Answer: a
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