Worksheet on Sources of Light, Transparent, Translucent and Opaque Objects

 

Sources of Light, Transparent, Translucent and Opaque Objects

 

Fill in the blanks:

     1.    You are able to see things because of ______

    2.    All non-luminousnobhects are visible due to the _________ of light falling on them.

    3.    Based on the ability of of ________to pass through them, the obects are classified as transparent, translucent and opaque.

    4.    Muddy water is _________ while clear water is __________

 

Write any two eamples:

    1.    Natural sources of light___________  _____________

    2.    Artificial sources of light___________ _____________

    3.    Non-luminous objects ___________  _____________

    4.    Transparent objects ___________       _____________

    5.    Translucent objects ___________       _____________

    6.    Opaque objects ___________   _____________

 

Write True/False:

    1.    Moon reflects its ownlight and hence it is a luminous object.

    2.    Some plastics are opaque while others are translucent.

    3.    If you are able to see clearly through an object, it is an opaque object.

    4.    Lantern fish emits ligth.

 

Define:

Light

____________________________________________________________

____________________________________________________________

 

Luminous objects

____________________________________________________________

____________________________________________________________

Non-luminous objects

____________________________________________________________

____________________________________________________________

Transparent Objects

____________________________________________________________

____________________________________________________________

 

Translucent Objects

____________________________________________________________

____________________________________________________________

 

Opaque Objects

____________________________________________________________

____________________________________________________________

 

 

 

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