What is a tide? Explain its types.

What is Tsunami? Explain its effect

Discuss the different types of ocean currents and their causes.

How do we classify ocean movements? Explain.

Explain the occurrence of Tsunami and its effects?

On the basis of following picture, answer the given questions.

Why is water important for us?

(i) The name of one river is hidden in each of the sentences below. Spot it. Example : Mandira, Vijayalakshmi and Surinder are my best friends Answer: Ravi
(a) The snake charmer's bustee, stables where horses are housed, and the piles of wood, all caught fire accidentally. (Hint: Another name for River Brahmaputra)
(b) The conference manager put pad, material for reading and a pencil for each participant. (Hint: a distributary on the. Ganga-Brahmaputra delta)
(c) Either jealousy or anger cause a person's fall (Hint: Name of a juicy fruit!)
(d) Bhavani germinated the seeds in a pot (Hint: Look for her in West Africa)
(e) "I am a zonal champion now" declared the excited athlete. (Hint: The river that has the biggest basin in the world)
(f) The tiffin box rolled down and all the food fell in dusty potholes. (Hint: Rises in India and journeys through Pakistan)
(g) Malini leaned against the pole when she felt that she was going to faint. (Hint: Her delta in Egypt is famous)
(h) Samantha mesmerised everybody with her magic tricks. (Hint: London is situated on her estuary)
(i) "In. this neighbourhood, please don't yell! Owners of these houses like to have peace". Warned my father when we moved into our new flat". (Hint: Colour!)
(j) 'Write the following words, Marc!" "On", "go", "in" , said the teacher to the little boy in KG Class. (Hint: Rhymes with "bongo') Now make some more on your own and ask your classmates to spot the hidden name. You can do this with any name: that of a lake, mountains, trees, fruits, school items, etc.
(ii) With the help of an atlas, draw each river which you discovered in For Fun (i), on an outline map of the world.

Show on the world map.
Warm Currents
(a) North Pacific Drift (b) Gulf Stream (c) North Atlantic Drift (d) Equator Counter Current (e) South Equatorial Current
Cold Currents
(a) Peru Current (b) West Wind Drift (c) West Australian Current (d) Oyashio Current (e) Labrador Current