Light and sound blog
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The document discusses different sources of light and sound. It explains that the sun, torches, light bulbs and candles are all sources of light that allow us to see. When these light sources are blocked by opaque objects, shadows are formed. Different objects like radios, instruments, bees and cars produce various sounds that can provide information or warnings.
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- 4. A light bulb is a light source. Candles are light sources.
- 5. In the day, the Sun gives us light.
- 6. At night, we use different sources.
- 7. Street lights give us light. Lamps give us light. Candles give us light.
- 8. When there is no light…
- 9. We can’t see anything!!
- 10. This is a shadow.
- 11. A shadow is formed when an opaque object blocks the light.
- 12. Transparent materials don’t block the light. There is no shadow! Opaque materials block the light. There is a shadow!
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- 14. We hear sounds with our ears.
- 15. Sound comes from different sources. A radio is a sound source. Instruments are sound sources. A bee is a sound source. Cars are sound sources.
- 16. Some sounds are loud!
- 17. Some sounds are quiet.
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