SOUND WAVES

Science Masterpiece

INTRODUCTION TO SOUND

Link To Sound Video

VOCABULARY

• Sound – anything that can be heard

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• Sound Waves – waves that form when a sound is made, moving through the air and carrying the sound to your ears

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• Frequency – the number of times that something (such as a sound wave or a radio wave) is repeated over a period of time

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• Amplitude – the height of the sound wave, affects the loudness or the volume

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VOCABULARY WORDS

• Conductor – an object that allows sound waves to travel
• Vibrate – to move with fast, short, back-and-forth motions
• Vibration – the movement produced from vibrating
• Reverberate – a noise that is repeated as an echo

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EXPERIMENT TIME

Supplies

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• A ruler

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• Two different size spoons

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• About 4 feet of string or yarn

Experiment

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• Create a loop in the middle of the yarn, insert the spoon handle. Pull tightly so the spoon hangs in the center of the yarn.

• Take each string and wrap it around your point finger on each hand.

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• Then push the string against your ear (not inside your ear).

• Let your spoon hang below your waist

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• Have someone gently hit the ruler against the round part of the spoon.

CONCLUSION

• When the ruler hits the spoon, it creates vibrations which make sound waves. These sound waves travel up the yarn and to your ears instead of just spreading through out the room.
• The yarn acts as the conductor, or object that allows sound waves to travel.
• The sound waves continue for a while after you hit the spoon because the waves are reverberating, or going back and forth.

COOL SOUND FACTS