Page 102 - Viva ICSE Science 4 : E-book

Do and Learn

Categorise Different Objects

Categorise the following objects under the correct categories given in the table below.
Remember that an object may fall under one or more categories.

Torch Bulb Sun Earth Candle Tree Lamp Moon
Jellyfi sh Glass Pencil Glow-worm Stars Table

Natural sources of Artifi cial sources of
Luminous objects Non-luminous objects
light light

Group Activity

Project Time
Take a torch and go to a dark room with your friend. Ask
him to stand at some distance from you. Switch on the Using the Internet collect
torch and focus on him. A shadow falls behind him. Note information on eclipse and
the colour and the size of the shadow. its types, and make a project

Now ask your friend to move step-by-step towards you. report on it.
Notice the size and the colour of the shadow with each
step.

Make any two conclusions from the above activity and discuss them in the class.

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