Q.1: Salinity is the amount of salt in grams present in _______ grams of water.
Q.2: When the water vapour cools down, it condenses and forms _______.
Q.3: _________ is celebrated as World Water Day.
a) December 22
b) May 12
c) March 22
Q.4: There are _______ movements of ocean.
Q.5: Percentage of fresh water in atmosphere is _____.
Q.6: Dead sea is in ______.
Q.7: ______ are formed when gentle wind scrapes across ocean surface.
Q.8: Tsunami is a ________ word.
Q.9: _________ in the Andaman and Nicobar islands got submerged after the tsunami.
a) Indira Point
b) Port Blair
Q.10: The largest tsunami ever measured was _____.
a) 150 m
b) 120 m
c) 200 m
Q.11: It is possible to give a ___ hour notice of a potential tsunami.
Q.12: The rhythmic rise and fall of ocean water twice in a day is called ______.
Q.13: The Labrador current is a _______ current.
Q.14: _____ currents bring over warm temperature over land surface.
Q.15: _______ tides help in navigation.
Q.16: _______ tides occur during the full moon and new moon day, when the earth, moon and sun are in the same line.
Q.17: Many fish come closer to the shore during ______ tide.
Q.18: The areas where cold and warm currents meet have ______ weather.
Q.19: Tsunami struck havoc in Indian Ocean on __________.
a) 2 December 2011
b) 26 December 2004
c) 25 December 2000
Q.20: ______ of the earth’s surface is covered by water.