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✦ Class 8 · Science
Luminous and Non-Luminous Objects
Did you know the Moon doesn't make its own light, but the Sun does—and we can prove it?
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What this lesson covers
Step by step, in this order.
- 1Start with a question: What's the difference between a lamp and a wall?
- 2Tell the story: Ancient people thought the Moon made light. Galileo showed it just bounces sunlight.
- 3Recap: Luminous makes its own light. Non-luminous reflects light from something else.
How it looks
A real board, not a video.
This board is from a different Science lesson — yours will look like this. She writes and draws while she explains, and stops to check you followed.
Doubts this lesson clears up
- Yes. Fire produces light from the heat of burning. That's luminous.
- No. The Moon reflects sunlight. It's non-luminous. We see it because the Sun lights it up.
- Yes. The screen produces light from electricity. It's luminous.
- Good question. If you heat something hot enough, it glows. Then it becomes luminous. But normally, a stone is non-luminous.
- No. A mirror just bounces light. It's non-luminous. You can only see it if light hits it first.
- Yes. A firefly makes light inside its body through a chemical reaction. That's luminous.
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