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Water and Rocks

Water and Rocks
science Square
Science Square

Water

  • Water is a natural resource
  • Water is required by humans, plants and animals to drink and live
  • There is no fixed shape of water.
  • Earth surface is covered by 71% of water.

Forms of water

  1. Solid form of water
  • A solid form of water is ice
  • Ice is formed when water temperature is very low

class 2 water

  1. Liquid form of water
  • Water is the liquid form of water.

         Water

class 2 water

  1. Gas form of water
  • On heating, water gets converted into steam.
  • Water vapor forms cloud

class 2 water

  1. Saltwater
  • Very high amount of salt
  • A major part of the earth is covered by salt water
  1. Freshwater
  • The concentration of dissolved salt is low
  • Used for drinking
  • Covers only 2% of the earth.

Uses of water

class 2 water

Rocks

  • A hard matter which makes the mountains are called rocks
  • Rocks have temples and carvings
  • Rocks are found in different shapes, sizes and colours.

Types of Rocks

  1. Granite
  • Granite is a hard rock
  • It is grey, black or light red in colour.
  • Used in building houses, roads.

class 2 water

  1. Marble
  • It is a smooth rock
  • Used to build statues, buildings.
  • TajMahal is made of marble.

class 2 water

  1. Sandstone
  • It is a soft rock
  • Can be broken into parts
  • It is black in color

class 2 water

  1. Graphite
  • Black in color
  • Used as lead in pencil

class 2 water

  1. Slate
  • It is a smooth rock
  • Used for making slates and blackboards.

class 2 water

  1. Limestone
  • It is a soft rock
  • Used in manufacturing of cement

class 2 water

Recap

  • Water is a natural resource
  • Water is required by humans, plants and animals to drink and live
  • There is no fixed shape of water.
  • Earth surface is covered by 71% of water.

 

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