Sound

Sound is produced by: (Write 1 sentence only)

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Which state of matter does sound travel through fastest and why? (Write 1 sentence only)

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Why can't sound travel in space?

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After a guitar string is plucked, what happens that allows your ears to hear the sound it makes?

• The string vibrates and creates sound waves that travel through the air to your ears.

• The string glows and emits light that your eyes detect.

• The string dissolves and releases a scent you can smell.

• The string changes color and you see the sound.

The diagrams show the patterns made by four sound waves on an oscilloscope screen. They are all drawn to the same scale. Which wave shows a loud sound with a low pitch?

• P

• Q

• R

• S

The diagrams show the patterns made by four sound waves on an oscilloscope screen. They are all drawn to the same scale. Which wave shows a loud sound with a high pitch?

• P

• Q

• R

• S

The diagrams show the patterns made by four sound waves on an oscilloscope screen. They are all drawn to the same scale. Which wave shows a quiet sound with a high pitch?

• P

• Q

• R

• S

Jasmine is deaf. She blows up a balloon and holds it near to John’s mouth. She cannot hear John’s voice, but she can tell when John is speaking, by feeling the balloon, because:

• She can feel the vibrations through the balloon.

• She can see the balloon change color.

• She can hear the sound through the balloon.

• She can smell something different.

Jasmine is deaf. She blows up a balloon and holds it near to John’s mouth. She cannot hear John’s voice, but she can tell that he is speaking, by feeling the balloon. John shouts loudly. How will the balloon feel different to Jasmine now?

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In what way can the ears be damaged?

• By exposure to loud noises

• By eating spicy food

• By wearing glasses

• By drinking water