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ORCHIDS The International School

Natural Materials

Question 1:

What Is Bamboo Used for? Why It Is a Very Useful Natural Material?

  • Bamboo is a flexible biodegradable material.
  • It is not affected by water like other wood. It does not swell up due to the absorption of water. It makes an excellent alternative to pla
  • It is used as a raw material for construction, textiles, roads and buildings, and solid fuel.
what is bamboo used for


Question 2:

How Are Salts Derived From Nature?
  • Salt is either derived from seawater or rocks.
  • The table salt we use at our homes is separated from seawater by evaporation, which is then purified.
  • Rock salt we use is derived from rocks and purified before use.
sources of salt


Question 3:

Animals and Plants Are Living Organisms. What Happens to the Body of Living Organisms After Their Death?
  • Plants and animals decompose into simple nutrients after their death.
  • Decomposers act on the complex nutrients stored in animal and plant bodies while they are alive and convert them into simple nutrients that later get mixed up with the soil and are reused by new plants.
  • This process ensures the continuous formation of organic material in the soil.



Question 4:

Why Is Coconut Coir an Excellent Material for Making Ropes or Fishnets?

Coconut coir is an excellent material for making ropes or fish nets due to following reasons:

  • It is cheap and can be easily extracted from the coconut fruit.
  • The fibres of coconut coir are strong, sturdy, and cannot be broken easily.
  • Coconut coir does not decompose quickly in the water, so the ropes or nets made up of coconut coir remain intact for a longer time


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