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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 2. Question. Classify the objects or materials given below a opaque, tranparent or translucent and luminous or non_ luminous:
Air,water, A piece of rock, A sheet of aluminum, A mirror, A wooden board, A sheet of polythene, a CD, Smoke, A sheet of plane glass, fog,A piece of red hot iron, An Umbrella, A lighted fluorescent tube, A wall, A sheet of carbon paper, A flame of a gas burner, A sheet of cardboard, A lighted torch, A sheet of cello- phane, A wire mesh, Kerosene stove, sun Firefly, Moon.  


Answer.

Luminous                        Non- luminous.
A piece of red hot iron          Air.
A lighted fluorescent tube.      Rock
flame of a gass burner.          Aluminum.
lighted torch.                   Wooden board.
Kerosene stove                   CD.
sun Firefly                      Wire mesh. 
                                 Mirror.
                                 Polythene.                               
                                 Moon.           
                                 Fog.
                                 Smoke.
                                 Cardboard.
                                 Cello- phane.
                                 wall.
                                 Plane glass.
                                 Water.
                                 Cardboard

3. Question. Can you think of creating a shape that would given a circular Shadow if held in one way and a rectangular shadow
if held in another way?
Answer.
Yes.

4. Question. In a completely  dark room, if you hold  up a mirror in front of you, will you see reflection of yourself in the mirror?
Answer.
In a completely  dark room, on cannot see any image in the mirror, because there is no light falling on mirror Which can be reflected to show the image.

 

 

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