Which is the process through which water continuously changes its form?
  • Water cycle
  • Food cycle
  • Rain
  • All of these
Which water is salty?
  • River water
  • Pond water
  • Rain water
  • Sea water
Which one of the following is an artificial enclosure for keeping small house plants?
  • Terrarium
  • Thermosphere
  • Climate
  • Evaporation
Sea water contains
  • 97.3% of salt
  • 2% of salt
  • 0.68% of salt
  • 0.973% of salt
Which day of the year is celebrated as Water Day?
  • 26 January
  • 15 January
  • 15 August
  • 22 March
The movements that occur in oceans can be broadly called
  • wave
  • circulation
  • water cycle
  • all of these
Which is the Japanese word which means ‘Harbour Waves’?
  • Tsunami
  • Sea wave
  • Ocean wave
  • None of these
When did Tsunami strike the Indian ocean?
  • 26 December, 2004
  • 26 December, 2005
  • 26 December, 2006
  • 26 December, 2007
The largest Tsunami wave travels at the speed of
  • more than 700 km per hour
  • more than 500 km per hour
  • more than 250 km per hour
  • more than 100 km per hour
The rhythmic rise and fall of ocean water twice in a day is known as
  • tide
  • wave
  • ocean current
  • none of these
The Labrador and Gulf stream are the examples of:
  • Tides
  • Ocean currents
  • Tsunami
  • Waves
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