Food
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   Components of Food
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   Fibre to Fabric
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   Sorting Materials Into Groups
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   Separation of Substances
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   Changes Around Us
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   Getting to Know Plants
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   Body Movements
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   The Living Organisms and Their Surroundings
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   Motion and Measurement of Distances
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   Light, Shadows and Reflection
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   Electricity and Circuits
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   Fun with Magnets
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   Water
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   Air Around Us
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   Garbage In, Garbage Out
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 1.Question.Classify following fibers as natural or synthetic:
Answer.   Natural               Synthetic
                Wool                   Nylon
                Cotton                 Polyester
                Silk
                Jute 

  2.Question state whether the following statements  are True or False:
Answer. 
         (a) Yarn is made of fibers.(True)
        (b) Spinning is a process of making fibers.(False)
        (c) Jute is the outer covering of coconut.(false)
        (d) The process of removing seed  from cotton called ginning.(True)
        (e) Weaving yarn makes a piece of fabric.(True)
        (f) Silk fiber is obtained from the stem of a plant.(False)
        (g) Polyester is a natural fiber.(False)

3.Question. fill in the blanks:
Answer. 
(a) Plant fibers are obtained from cotton and jute.
(b) Animals fibers are  silk and wool.    

4.Question. From which parts of the cotton and jute are obtained?
Answer.(1) Cotton: From fruit of the cotton plant.
             (2) Jute:  From stem of jute plant.

5.Question.Name two items that are made from coconut fiber ?
Answer.(1) Bags. (2) Rope.

6. Question.Explain the process  of making yarn from fiber ?
answer. The process of making yarn from fiber is called spinning. In this process,fibers from a mass of cotton wool are drawn out and twisted. this brings the fibers together to from a Yarn.   

 

 

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