What is hydrological cycle?
The cycle consists of evaporation,
condensation and precipitation. This constant movement of water is
known as hydrological cycle or water cycle.
What is the percentage of freshwater and saline water?
Only 3% of resource is freshwater (water that contains very little
dissolved salts)and the rest 97% is saline water.
Name the
major water bodies
Pacific
ocean,Atlantic Ocean, Indian Ocean, Arctic ocean, Southern Ocean.
What is circulation of ocean water?
Ocean water is constantly moving either in horizontal or vertical
direction. This movement is caused due to factors such as temperature,
salinity, density and prevailing winds.
Ø What is a crest and a
trough?
Upper part of the wave is called crest and the lower part is called
trough.
What causes waves?
Waves are caused by winds
What is a crest?
Crest is the upper part of a wave.
What are tides?
Tides rise and fall under the influence of the
gravitational pull of the moon and sun.
· What are the factors involved in creating the
tides?
moon, earth and the sun
What are neap tides?
when the moon is in the first and third quarter the sun
and the moon are at right angles with regards to the earth this
results in low
tides. These are called neap tides
· Mention any 1 importance of tides.
Tides help in fishing, tides are a source of energy ( etc).
· What are Ocean Currents?
The horizontal movement of masses of ocean water in the form of
board streams in definite directions is called ocean current.
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