Why are some sounds high and some sounds low?

What did the invention called the Mosquito do?

• It made very low pitched sounds that only young people could hear.

• It made very quiet sounds that only young people could hear.

• It made very high pitched sounds that only young people could hear.

What is the difference between pitch and volume?

• Pitch is how high or low a sound is and volume is how loud or quiet a sound is.

• Pitch is how loud or quiet a sound is and volume is how high or low a sound is.

• Pitch and volume mean the same thing.

Higher pitched sounds

• vibrate faster than lower pitched sounds.

• vibrate slower than lower pitched sounds.

• vibrate the same way as lower pitched sounds.

Lower pitched sounds

• vibrate faster than higher pitched sounds.

• vibrate slower than higher pitched sounds.

• vibrate the same way as higher pitched sounds.

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When a firecracker explodes, sound travels

• in one direction towards the ground.

• in all directions like a rock making waves when dropped in a puddle.

• in two directions, downward and upward.

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A high pitched sound will have waves that are

• close together.

• far apart.

• really tall.

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High and low pitched sound waves are different in that

• they are either tall or short.

• they are either random or in a nice pattern.

• the distance between waves is either short or long.

What is wavelength?

• Wavelength tells you if sound waves are squished together or spread out.

• Wavelength tells you how tall or how short sound waves are.

• Wavelength tells you how fast sound waves are moving.

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