LIGHT
NOTES What makes things visible? We can see the world through our eyes or our sense of sight. However, we cannot see anything without the l...
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NOTES Source of light: An object which emits light, is called a source of light. For example, sun, torch, etc. Non-luminous objects: Thes...
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NOTES Deforestation Clearing of forests and trees eventually using that land for other purposes like agriculture and other human activities...
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COMBUSTION AND FLAME NOTES Combustion A chemical process in which a substance reacts with oxygen to give off heat and light is called comb...
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