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Question
Make a list of some luminous objects and substances and classify them into natural and artificial sources of light.
Classify
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Solution
| Natural sources of light | Artificial sources of light |
|---|---|
| Sun | Electric bulb |
| Stars | Tube light |
| Firefly | Candle |
| Lightning | Oil lamp |
| Some glowing sea animals | Torch |
| Glowing lava | Lantern |
Natural sources of light occur in nature, while artificial sources of light are made by humans.
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