Class 7
Chapter 5
Water
- Answer the following questions.
(i) What is precipitation?
(ii) What is water cycle?
(iii) What are the factors affecting the height of the waves?
(iv) Which factors affect the movement of ocean water?
(v) What are tides and how are they caused?
(vi) What are ocean currents?
- Give reasons.
(i) Ocean water is salty.
(ii) The quality of water is deterioting.
- Tick the correct answer.
(i) The process by which water continually changes its form and circulates
(a) Water cycle
(b) Tides
(c) Ocean currents
(ii) Generally the warm ocean currents originate near
(a) Poles
(b) Equator
(c) None of these
(iii) The rythmic rise and fall of ocean water twice in a day is called
(a) Tide
(b) Ocean current
(c) Wave
- Match the following.
(i) Caspian Sea
(ii) Tide
(iii) Tsunami
(iv) Ocean currents
- For fun.
(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 Brahmputra)
(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.
Carry on Detective
(ii) With the help of an atlas, draw each river which you discoverd in For fun (i), on an outline map of the world.