Look around your school. There may be fields, paved roads, paddies, drains etc. Is the area steep, rocky or flat? Think, what happens if it rains there? Where will the rain water go? - In drains, pipes or ditches? Does some water even seep into the ground?
There
are paved roads around my school. That area is steep. If it rains there, the
rainwater flows into the sloping area. This rain water goes into the drain from
there. A little water will not go down into the ground.
Where
did they get water for domestic consumption? Atya: Any change?
When
my grandparents were of my age, they fetched water for domestic use from a well
with a bucket. At present, water comes to the house through taps through
panchayat bores.
How
water was provided for passengers? For example, Parab, Mashak or something
else? What do people do for water while traveling now?
In
earlier times water was provided by parab on public road for passengers.
Nowadays, people carry water bottles from home while traveling or buy water
bottles or pouches by paying money
Have
you seen beautiful buildings near water bodies? where?
Yes,
I have seen the beautiful buildings of Shiva temples near the Sahasraling lake
in Patan and the beautiful buildings of Surya Mandir near the water reservoir
of Modhera.
Let
us see how people today manage to get water in different ways. How do you get
water in your home? Mark / on it. Write in your notebook if you are getting
water in any other way.
Today
people get water in different ways. The local system makes proper arrangements
for the water well-being of the people. However, in some areas there is water
shortage or people are suffering for water. People get water in different ways
as follows:
Getting
water through water tankers supplied by Jal (Water Supply) Board. Obtaining
water by drawing it from a well. Arrival of water within half an hour time
limit. Access to tap water throughout the day. Getting water by hand pump. Getting
water by connecting the water supply pipe to the pump. Getting water as desired
from borewell by motor pump. Getting water from canals.
Thus,
the arrangement of people to get water in different ways above We get tap water
throughout the day (round the clock) by storing water in a tank on the roof through
a borewell in our house.
Have
you ever read such news in any newspaper? How do people solve their water
problems? Do they repair and reuse old ponds and ponds?
Yes,
I have read such news.
People
of a village in Maharashtra have solved their water problem by re-dug and
repairing a very old village lake.
Some
people make a farm pond and use its water to irrigate the crops in the field.
In
a village in Rajasthan, people came together in a group to build a pond and
overcome the water problem.
Where
do you get drinking water at home?
A
water tank has been constructed by the Gram Panchayat of my village. Water
connection from that tank has been provided through taps to every house in the
village. In my house we get water from that tap.
What
should be done to save water at home?
To
save water at home, steps should be taken as follows: (1) Only as much water as
required for drinking should be taken in a cup so that excess water does not
have to be spilled. (2) Water should be used as much as required while bathing
and washing utensils and clothes. Do not use more water than required. (3)
Sufficient water should be used for cooking. (4) Keep the faucet on for as long
as needed. (5) Do not turn on the faucet from the beginning when brushing and
shaving, but only when cleaning at the end.
Where
is water used?
Water
is used for drinking, cooking, bathing, cleaning, horticulture, agriculture,
construction of houses, generation of electricity and steam and in small and
large industries.
'Water
is the elixir of life.' explain
Our
life depends on water. If the amount of water in the body decreases, the person
feels dehydrated and also becomes unconscious. If too much water is lost, a
person may die. Water is very essential for the biological functions of the
body like digestion, excretion, blood circulation etc. Thus, water is the
elixir of life as life requires water.
How
does rain benefit us?
Rain
provides us with water for drinking, domestic consumption and agriculture. Only
if it rains, we can grow grains, other crops and vegetables. Rainwater
accumulates in lakes, rivers and wells, so that water is available for use by
the people.
After
experimenting, Discuss the Reason.
An
iron nail sinks in water but a bowl floats. This happened because, iron nail is
solid. It is greater than the weight of water occupying the same space, while
the weight of the space occupied by the empty part of the bowl, including air,
is less than the weight of water occupying the same space. Thus the bowl becomes
lighter than the water and hence the bowl floats on the water.
An
empty plastic bottle floats on water. A bottle filled with water sinks because,
an empty plastic bottle contains air, while a bottle filled with water is
deflated and the bottle becomes heavier as it fills with water. So it sinks
into the water.
Aluminum
foil floats when spread. When a sphere is pressed hard, it sinks. This happened
because, by pressing the expanded aluminum foil into a sphere, a solid sphere
of aluminum is formed, which is heavier than water of the same size.
Show
few ways in which Vikas can dissolve sugar quickly.
Development
should do the following to dissolve sugar in water quickly:
(1)
Sugar should be added to water and stirred continuously with a spoon. (2) Sugar
should be added to water and heated. (3) Crush the sugar into small particles
and dissolve it in water.
Can
you see the salt after it dissolves in the water? If not why?
No,
salt cannot be seen after it dissolves in water. Because, as the salt is white,
its solution is colourless. Salt completely dissolves in water and becomes
completely invisible. (Salt is soluble in water.)
Does
it mean that there is no salt in the water? If it has, where is the salt?
There
is salt in the water. But we cannot see it as it is dissolved in water as fine
particles. The taste of water indicates that it contains salt.
What
difference can you see between salt water and chalk powder water after keeping
it for some time?
In
salt water, the salt is completely dissolved, so the salt is not visible in the
water. When in water with chalk powder, the chalk powder does not dissolve and
collects at the bottom (bottom) of the water, which can be seen.