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1 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Vocabular y How Sound is Made & Travels Features of Sound Factors affecting Pitch Reflect and Absorb

1 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Vocabulary

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VocabularyHow Sound is Made &

Travels

Features of Sound

Factors affecting

Pitch

Reflect and Absorb

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What is pitch?

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The highness or lowness of sound

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What is volume?

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The loudness of sound

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What is amplitude?

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The height of a sound wave (the volume)?

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What is timbre?

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The quality of sound

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What is kinetic energy?

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Energy in motion

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What do you need in order to start any sound?

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Energy

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All sound is caused by …

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vibrations

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First you need energy to create a vibration. Then the molecules of the object vibrate. What happens next?

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The vibrations of those moving molecules are transferred to the

air molecules.

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Sound travels in what form….

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Sound waves

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Sound cannot travel in this medium

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A vacuum (space is an example of a vacuum)

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If I blow the top instrument, then the bottom one, I’ve made a change in

frequency or amplitude?

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Frequency. The difference in length affects the pitch (which is

the same as frequency).

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If I increase the amplitude I am increasing the volume – true or

false?

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True! Amplitude & volume are related

Remember, “Amp it up!”

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If I increase the intensity, I’m also increasing the_____ of the sound.

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Energy, volume, amplitude(any or all is acceptable)

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Sing ONLY the first two words – “twinkle, twinkle” of

“Twinkle, Twinkle Little Star.

You’ve just made a change in ________

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Pitch or frequency

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The faster an instrument vibrates, the higher the __________ of the sound

it makes.

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Pitch or frequency

Think: it’s vibrating more frequently, so it’s increasing its

frequency

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What sounds higher in pitch, a wide rubber band or a thin rubber band?

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A thin rubber band

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What‘s lower in pitch, a tight string or a loose string?

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A loose string

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What’s higher in pitch, a long organ pipe or a short one?

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A short one

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If I do this to the drum skin, I will make it sound higher in pitch

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Tighten it

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If I decrease the pitch, I am also decreasing the _______ of sound

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Frequency

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Reflect means….

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To bounce off of something

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Absorb means….

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To take in or soak in

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Which reflects sound best? A brick wall or a stack of books.

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A brick wall

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Which absorbs sound better, a carpet or a wall?

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A carpet

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In most cases, the better room for an echo is the family room or the

bathroom? Why?

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The bathroom. Places that are empty with flat surfaces and not a lot of soft

things to absorb sound reflect best. A family room will likely

have carpet, sofas, several people. A bathroom has tile, flat, hard surfaces, and not a lot in it

to absorb sound.