PPT: Water—The Essence of Life | Our Wondrous World Class 5 - New NCERT PDF Download

 Page 1


Water: The Essence of Life
Page 2


Water: The Essence of Life
Earth's Water Distribution
Most of the Earth's surface is covered with 
water, but most of this water is salty ocean 
water.
Only a very small amount of water on Earth is 
freshwater, found in rivers, lakes, groundwater, 
and rain.
Freshwater is essential for people, animals, 
birds, and plants to live, drink, and grow food.
Imagine if all Earth's water was in one glass 4 
the freshwater would fill only a teaspoon!
Page 3


Water: The Essence of Life
Earth's Water Distribution
Most of the Earth's surface is covered with 
water, but most of this water is salty ocean 
water.
Only a very small amount of water on Earth is 
freshwater, found in rivers, lakes, groundwater, 
and rain.
Freshwater is essential for people, animals, 
birds, and plants to live, drink, and grow food.
Imagine if all Earth's water was in one glass 4 
the freshwater would fill only a teaspoon!
Do you know? Salt pans in Gujarat are large flat 
areas where seawater is dried to get salt.
These vast white expanses show how we can extract 
useful minerals from seawater through evaporation, 
demonstrating one way humans interact with the water 
cycle.
Page 4


Water: The Essence of Life
Earth's Water Distribution
Most of the Earth's surface is covered with 
water, but most of this water is salty ocean 
water.
Only a very small amount of water on Earth is 
freshwater, found in rivers, lakes, groundwater, 
and rain.
Freshwater is essential for people, animals, 
birds, and plants to live, drink, and grow food.
Imagine if all Earth's water was in one glass 4 
the freshwater would fill only a teaspoon!
Do you know? Salt pans in Gujarat are large flat 
areas where seawater is dried to get salt.
These vast white expanses show how we can extract 
useful minerals from seawater through evaporation, 
demonstrating one way humans interact with the water 
cycle.
Water has Different Forms
Liquid
Rain and river water
Solid
Ice and snow
Gas or Vapour
Steam or water 
vapour 
Page 5


Water: The Essence of Life
Earth's Water Distribution
Most of the Earth's surface is covered with 
water, but most of this water is salty ocean 
water.
Only a very small amount of water on Earth is 
freshwater, found in rivers, lakes, groundwater, 
and rain.
Freshwater is essential for people, animals, 
birds, and plants to live, drink, and grow food.
Imagine if all Earth's water was in one glass 4 
the freshwater would fill only a teaspoon!
Do you know? Salt pans in Gujarat are large flat 
areas where seawater is dried to get salt.
These vast white expanses show how we can extract 
useful minerals from seawater through evaporation, 
demonstrating one way humans interact with the water 
cycle.
Water has Different Forms
Liquid
Rain and river water
Solid
Ice and snow
Gas or Vapour
Steam or water 
vapour 
Changing Forms of Water
Water can change from one form to another:
1 Ice melts into water when heated
2 Heating water produces steam (water 
vapour)
3 Water vapour cools and forms clouds
4 Clouds later produce rain or snow