Water Resources

Question 1

97 % of the earth’s water supply is in the _____

Answer 1

Ocean

Question 2

Of the remaining 3 % , 2.3% is locked in _____, and the remaining .7% is _______

Answer 2

polar ice caps, freshwater

Question 3

of the 0.7% of freshwater- 0.66% is _____ and 0.03% is ______

Answer 3

groundwater, surface water

Question 4

Surface water is a result of : (2)

Answer 4

1. Precipitation

2. Seepage from underground

Question 5

water that gets collected under the surface of land is known as ____

Answer 5

Groundwater

Question 6

An underground water stream that is saturated with water and transmits water readily is known as

Answer 6

aquifer

Question 7

India has vast coastline with ____ coasts

Answer 7

Indented

Question 8

Due to increase in _____. _____ and _______, demand for water has risen

Answer 8

Population, irrigation and industrialisation

Question 9

_____ uses more than 90% of total freshwater

Answer 9

Irrigation

Question 10

Major reasons why we need to conserve water

Answer 10

1. Irrigation uses more than 90% of freshwater
2. loss of vegetation - lowering water table
3. overuse of groundwater - lowering water table
4. Increase in population - water scarcity
5. water resources - polluted

Question 11

Collecting and storing rainwater

Answer 11

Rainwater harvesting

Question 12

Central Govt. has started a watershed development for rural people called as :

Answer 12

Haryali

Question 13

Management and conservation of both surface and groundwater resources

Answer 13

Watershed management

Question 14

Storing mechanism is called _____- / ______ in Western Himalayas

Answer 14

Khatri/ Kuhl

Question 15

Storing mechanism is called _____- / ______ in Gangetic plains

Answer 15

Baolis / Dighi

Question 16

Storing mechanism is called _____ in Central India

Answer 16

Johads

Question 17

Storing mechanism is called _____ /_____ in the Deccan Plateau

Answer 17

Bhandaras/ Kere

Question 18

Storing mechanism is called _____ in Western Ghats

Answer 18

Surangam

Question 19

Storing mechanism is called _____ in Eastern Ghats

Answer 19

Korambu

Question 20

Storing mechanism is called _____ in Ladakh

Answer 20

Zing

Question 21

Why even Cherrapunji which receives the highest rainfall in the world faces water shortage?

Answer 21

bcoz in India, rain occurs for short period at very high intensity so all the water is washed away instead of recharging water table

Question 22

The four elements of water harvesting

Answer 22

1. Catchments
2. Conduits
3. Storage facility
4. Recharge Facility

Question 23

the surface which receives the rain directly

Answer 23

Catchments

Question 24

pipe that carries rainwater from catchment to harvesting system

Answer 24

Conduits

Question 25

Rainwater can be used in two ways:

Answer 25

1. Stored for ready use in containers | 2. Recharge the groundwater

Question 26

____ is a water harvesting mechanism in which water falling on the roof is diverted via conduits to storage container

Answer 26

Rooftop Rainwater Harvesting

Question 27

To prevent debris from entering system, ____ is provided at the mouth of conduit.

Answer 27

Mesh filter

Question 28

If the stored water is to be used for drinking. ____ is provided

Answer 28

Sand filter

Question 29

watering agricultural plants through artificial means is called ___

Answer 29

Irrigation

Question 30

Avg annual rainfall in India Vs world

Answer 30

India - 1170mm | World- 800mm

Question 31

Percolation pits are also called as

Answer 31

Soakaway

Question 32

Reason why we need irrigation in India

Answer 32

1. Uncertainty and Uneven distribution of rainfall 2. Crop requirements 3. Nature of the soil 4. To utilise river water effectively 5. Maximise production

Question 33

Three cropping seasons of India

Answer 33

Kharif, Rabi, Zayed

Question 34

Due to increasing population, farmers are forced to ___________________________ which requires irrigation

Answer 34

Grow two or three crops in a year

Question 35

if we use high amount of fertilisers , high_____ is needed for the plant which can be provided only by ____

Answer 35

moisture, irrigation