1) What does circulates between oceans and land? a) Water cycle b) Condensation c) Evaporation d) Precipitation 2) How does clouds form? a) Water drops b) Water vapor c) cloud droplets d) all of the above 3) How many percent of salt water is present in oceans? a) 97% b) 97.0% c) both a and b d) 000.97% 4) The rhythmic rise and fall of oceans water twice in a day is called a) waves b) tides c) ocean current 5)  the strong gravitational pull exerted by sun and the moon on the earth's surface causes the? a) ocean current b) tides c) waves 6) what must be height of tsunami? a) 16m b) 14m c) 12m d) non of the above 7) The process of collecting rainwater from surfaces on which rain falls, filtering it and storing it for multiple uses. a) Water cycle b) rain water harvesting c) non of the above d) only b 8) How many grams of salt is present in dead sea? a) 360g b) 320g c) 340g 9) Which is the warm current ocean? a) Gulf stream b) Labrador ocean current c) Both a and b d) Only A 10) What do mean by tsunami in japanese? a) Harbour b) watika c) hdyes

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