Learning Task NO. 3: Read the given information about sounds. Answer the guide questions at the end of the lesson. Write your answers in your notebook.
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The given information about sounds are:
Sound:
- In physics, sound vibration produces like an audible wave, using a transmission medium such as gas, liquid or solid.
- In human physiology and psychology, sound embraces such waves and their vision of the brain.
Sound produced by:
- Sound is produced when smooth events cause the voice to vibrate rapidly in a series of vibrating vibrations with a speed of about: 300 cycles per second.
Sound travel /propagate through a medium are:
- Distribution of sound wave is not possible using vacuum.
- The contents can be gas, liquid or solid.
- The speed of sound when moving in a communication area depends on the type of location.
Transmission of liquids, solids and gases are:
- Sound waves travel in a place such as solids, liquids, or gases.
- These waves travel between these networks by vibrating the molecules in the layer.
- The molecules present in the solid are packed very hard.
- Liquid molecules are not packed as hard as solids.
- And the gases are full of loose.
- The separation of molecules enables sound to travel at a much faster rate in a solid environment than gas.
- Sound travels 4 times faster in water than in air.
- That is why whales can communicate in remote areas of the ocean.
- Sound waves travel 13 times faster in wood than in air.
- They also move faster on hot days as molecules collide more often than in the cold.
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