Light is a form of energy. The Sun is the biggest source of light. Light bulbs, flames of fire, candles, etc., are also the sources of light. Light travels in a straight line. It can travel through di
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Transparent, Opaque and Translucent Objects Objects can be classified as transparent, opaque and translucent. The objects through which light can pass are called transparent objects. Glass, water a
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Light Travels in a Straight Line We can prove that light travels in a straight line. Let us perform an experiment as follows: Experiment Take three similar cardboards and make holes in them at
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Shadow Formation Light travels in a straight line. When an opaque object is placed in the path of the light, it cannot pass through the object. Hence, shadow is formed behind the opaque object. Sha
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Eclipse The Earth moves around the Sun and the Moon moves around the Earth. When the Moon, the Earth and the Sun come in a straight line, an eclipse takes place (Figure a, b). Solar Eclipse
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