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class VII

Key Concepts

terranium, water cycle, distribution of water bodies, ocean currents, wave, salinity tides, tsunami

essential questions

1. How much water is available for human use?
2. What does the word 'cycle' in the term ' water cycle' actually mean?
3. What does it mean to ' conserve' water?
4. How does moon's gravitational pull affect the water on the earth?


  1. World water day is celebrated: a) 22nd march  b) 24th march c) 28th Feb  d) 1st March
  2. Out of the following which year is was observed as the international year of fresh water. a) 2005 b) 2003 c) 2006 d) 2008
  3. The amount of water recommended by united nations for drinking , washing, cooking and maintaining proper hygiene per person per day : a) 5 litres b) 15 litres c) 30 litres  d) 50 litres
  4. Water cycle does not involve the following: a) evaporation b) condensation c) formation of clouds  d) rainwater harvesting
  5. The average salinity of the oceans is: a) 35 parts per 1000  b) 45 parts per 1000 c) 25 parts per 1000 d) 50 parts per 1000
  6. The salinity of dead sea is: a) 340 parts per 1000   b) 350 parts per 1000  c) 300 parts per 1000 d) 3 parts per 1000
  7. Fresh water available in the forms of rivers: a) 0.0001  b) 0.001 c) 0.01  d) 0.1


  1. Water exists in: a) Three forms  b) two forms c) five forms  d) none
  2. The solid form, snow and ice is present___ of the earth. a) At the poles b) at the equator  c) present in the atmosphere  d) In the oceans
  3. The process of seeping of water into the grounds is called____ a) infiltration b) aquifer c) water  d) bawri
  4. The process of ground water getting stored between layers of hard rocks below the water table is known as: a) infiltration b) aquifer c) water table d) bawri
  5. Depletion of water table is due to: a) increase in population b) Industrial and agricultural activities
  6. __ allows the water to seep in easily. a) pucca floor b) grass lawn c) cement floor d) marble floor
  7. Activities which involve wastage of water are: a) washing  b) using the taps which are leaking c) bathing d) all of the above
  8. The process of recharging the ground water using the rain water is known as: a) water harvesting b) drip irrigation c) infiltration d) bawri
  9. The earth appears to be ___ in color from the space: a) blue   b) green  c) red  d) white
  10.  A very small percentage of water is present on earth for human consumption: a) 0.006%  b) 0.06%  c) 0.6% d) 6%


  1. A man digging the ground near a water body found the soil moist. As he kept digging deeper he reached a level where water was found in the gaps between the soil and rocks. The upper limit of the layer is called: a) water level  b) water table  c) ground water   d) water limit



  1. Assertion A: Neap tides happen due to the gravitational pull of sun and moon, when ocean water gets drawn diagonally opposite direction. Reason R: This leads to low tides and happens on full moon and new moon days.

a) Both A and R are true and R is the correct explanation of A. b) Both A and R are true but R is not correct explanation of A. c) A is true but R is false  d) A is false but R is true.

2. Assertion A:  Spring tides are also known as high tides. Reason R: The gravitational pull of the moon is highest because the moon, sun and earth are in the same line, during the full moon and new moon days.

a) Both A and R are true and R is the correct explanation of A. b) Both A and R are true but R is not correct explanation of A. c) A is true but R is false  d) A is false but R is true.

3. Statement 1: Labrador current is a cold current and Gulf stream is a warm current. Statement 2: Cold current carry cold water from polar regions , thus Labrador current flows in the south Atlantic ocean.

a) Both statement 1 and statement 2 are true and Statement 2 is the correct explanation of A. b) Both Statement 1 and Statement 2 are true but Statement 2 is not correct explanation of A. c) Statement 1 is true but Statement 2 is false  d) Statement 1 is false but Statement 2 is true.