SCIENCE PRO.

1
SCIENCE PRO.

• By -
• RAparna

2
INDEX

• Water
• Water Cycle
• Rain
• Snow or hail
• Forms of Water
• Rain water harvesting
• Floods
• Water Resources
• Thanks Giving

3
Water
4
WATER

• Water is colour less. It mainly contains oxygen
  for the survival of water mammals.
• Water is used in various activities of our daily
  life. We use water for bathing, washing clothes,
  brushing, for other activities. Think how much
  water would be wasted. Now, think of the
  conditions in a desert. They use a bucket of
  water very carefully. But we use it so
  carelessly.

5
WATER CYCLE

• Water cycle is process which forms rain. The
  water in the oceans, seas, beach etc. get
  evaporated due to the heat of the sun leaving
  behind the salt in it.
• Even the water present in the soil get
  evaporated. The leaves lose their water due to
  transpiration. The combined name of transpiration
  evaporation is called

6

• This water keeps floating higher higher. The
  water becomes smaller is called droplets, as it
  reaches the at most coolest layer. These small
  droplets Form a larger group are called clouds.
  As the clouds get heavier they come down to the
  earth again. This process never stops.

7
Rain

• Rain is nothing but water which is collected
  from the oceans, rivers which contain salt. But
  the rain does not contain salt. Sometimes there
  may be an acid rain.

8
SNOW or HAIL

• Snow or hail also come down to the earth. They
  also are like rain. So I conclude that water
  collected in the clouds, come down in the form of
  hail, snow, or rain.

9
Forms of WATER

• Forms of water present on earth are present in
  many ways. They are present as glaciers, water
  itself, ice, water vapour.
• The forms are-
• solid ice
• liquid water
• gas - water vapour.

10
Forms of WATER
11
Rainwater Harvesting

• Rain water harvesting means to collect rain
  water use it for some other purpose.
• Rooftop Rainwater Harvesting - In this system
  the water is collected from rooftops to a storage
  tanks through pipes. This water may be containing
  soil. It should be filtered before use.
• Another way is allowing the rain water to flow
  into the roadside drainage directly.

12
FLOODS

• Floods are caused due to heavy rainfalls. Even
  the trees ,lampposts fall down due to floods.
  There will be a major loss of life property. We
  should be ready to face these situations rather
  than arguing. These are natural calamities
  cannot be stopped by a human being

13
WATER Resources

• Have you ever thought where does the water in the
  taps come from? This water is supplied from the
  sources of water such as- river, lake, pond etc.
  through pipes. Now, what is a pipe? It is a
  narrow tube like structure which is normally used
  to supply water to our home.

14
(No Transcript)