SHADOW

SHADOW

How shadow can be formed?
Shadows are formed when a moving light is obstructed by an object.

Shadow Clarity of Objects

• clarity of the shadows formed according to the type of object
that obstructs it.

• Whether the object is transparent, translucent or opaque.

You can clearly see through You can partially see You cannot see through it at all.
transparent material. through it.

Object Clarity of shadow
(clear/ less clear / none
manila card
coloured plastic
clear plastic

1. Watch video and make an observation, record
your observation in the table.
2. Write the report in Science Practical book.

Activity in the text book page :90

Factors Affecting the Size of Shadows

Why sometimes we see a large shadow and sometimes smaller shadow???

1. Watch video and make an
observation, record your observation in
the table.
2. Write the report in Science
Practical book.
Activity in the text book page: 92

Factors Affecting the Shape of Shadows

1. Please do this activity, record your
observation in the table given.
2. Write the report in Science
Practical book.

Factors affecting the size of a shadow are:
• Distance of an object from the light source
• Distance of object from the screen

Conclusion:
• The further the distance of an object from the light source, the smaller the size of the

shadow.
• The further the distance of object from the screen, the bigger the size of the shadow.

Factors affecting the shape of a shadow are:
• Orientation of the object
• Position of the light source

Conclusion:
• If the orientation of the object is change, the shape of the shadow will change.
• If the position of the light source is change, the shape of the shadow will change.