1) When the sun is overhead, objects form ________ shadows 2) Materials that do not allow light to pass through are called ________ materials 3) The property of light traveling in a straight line is called ________ propagation of light. 4) Shadow is formed when a ________ object blocks the path of the light. 5) Earth shows two kinds of movement - Rotation and ________________ 6) Earth takes _________ to complete a rotation. 7) Objects that produce light are known as ________ 8) _________ of a shadow depends on the position of source of light, object and the screen. 9) When the sun is low in the sky at evening and in morning, objects form ________ shadows 10) Butter paper is an example of _______ 11) Earth takes _______ to complete one revolution. 12) Butter paper is an example of _________ materials.

Lights and shadows

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