Time Left:
600
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1. In which of the following months of the year are the tides lowest?
A. A.) 5th January
B. B.) 3rd January
C. C.) 3rd march
D. D.) 21st June
2. What is called when the water level falls between the time of spring tide and neap tide?
A. A.) Low wave
B. B.) Ebb
C. C.) High tide
D. D.) Falling waves
3. What is responsible for the originating of tides?
A. A.) Moon, earth, sun
B. B.) Water, wind
C. C.) Land, sky
D. D.) The forest
4. Which of the following currents is important in navigation?
A. A.) Tidal currents
B. B.) Tide
C. C.) The moon
D. D.) Earthquake
5. What helps in de-siltation?
A. A.) Underwater volcano
B. B.) Tide
C. C.) River flow
D. D.) Waves
6. Which of the following uses tidal currents to generate electricity?
A. A.) Israel
B. B.) India
C. C.) America
D. D.) Canada, france, russia, china
7. In which of the following three mega-watt power plants will be installed in west Bengal?
A. A.) Sundarwandugduvani
B. B.) Mumbai
C. C.) Kashmir
D. D.) Europe
8. Which of the following is a type of oceanic force?
A. A.) Primary force, second force
B. B.) Solar force, wave force
C. C.) Gravitational force, primary force
D. D.) None of the above
9. How oceanic current identified?
A. A.) Speed of water flow
B. B.) Temperature
C. C.) Colour
D. D.) Salinity
10. What is the unit to measure drift?
A. A.) Knot
B. B.) Centimeter
C. C.) Kilometer
D. D.) Kilohertz
11. What percentage of the ocean water in the following is upstream?
A. A.) Ten percent
B. B.) One percent
C. C.) Five percent
D. D.) Zero percent
12. What percentage of the ocean itself is in the form of deep currents?
A. A.) 90 percent
B. B.) 80 percent
C. C.) 8 percent
D. D.) 7 percent
13. In which of the following do cold water currents flow in tropical regions?
A. A.) Continental west coast
B. B.) North coast
C. C.) Indian coast
D. D.) None of the above
14. What is the main food of fish?
A. A.) Plankton
B. B.) Bugs
C. C.) Fish egg
D. D.) Mosquito
15. The side of the earth which is at the maximum distance of the moon, which force is dominant at the point?
A. A.) Centripetal force
B. B.) Centrifugal force
C. C.) Gravitational force
D. D.) Coriolis force
16. Which of the following is the most important force that produces horizontal tides on earth’s surface?
A. A.) Reciprocal force
B. B.) Coriolis force
C. C.) Spiral force
D. D.) None of the above
17. Which of the following is the time interval between two peaks or troughs of a wave passing through a fixed point in time?
A. A.) Wave frequency
B. B.) Wavelength
C. C.) Wave speed
D. D.) Wave period
18. What called to the number of waves passing through a given point in a time interval of one second?
A. A.) Wave speed
B. B.) Wave frequency
C. C.) Amplitude
D. D.) Wave crest
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