Music: Science of Sound

If there is a tornado, everyone in the area needs to be warned right away. That way, they can get inside and take cover. Which of these would be the best way to warn everyone at the same time?

• shining a bright light

• calling every phone

• knocking on every door

• sounding a loud siren

What is a sound's pitch?

• how far a sound has traveled

• how loud or how soft a sound is

• how high or how low a sound is

• how much energy a sound has

Sandra is conducting an experiment on the sound that a bell makes. The sound of the bell is quiet when she rings it gently. The sound of the bell is much louder when she rings it firmly. Which of these best describes what Sandra has noticed?

• Stronger vibrations in the bell make a lower pitched sound.

• Stronger vibrations in the bell make a higher pitched sound.

• Stronger vibrations in the bell make a louder sound.

• Stronger vibrations in the bell make a quieter sound.

Marcos made the instrument shown below by stretching two rubber bands around the nails on a board. Both of the rubber bands were exactly the same before they were stretched. When Marcos plucks the rubber bands, the rubber band that is stretched the tightest will most likely

• not make any sound at all.

• have a higher pitch than the other rubber band.

• be quieter than the other rubber band.

• sound exactly the same as the other rubber band.

Tags

NGSS.MS-PS4-1

Which of the following would cause the loudness, or volume, of a sound to increase?

• decreasing the speed of a vibration

• decreasing the strength of a vibration

• increasing the strength of a vibration

• increasing the speed of a vibration

Tags

NGSS.MS-PS4-1

Jimmy stretches a rubber band between his fingers. When he plucks it, it vibrates and makes a sound. What would happen if Jimmy were to stretch the rubber band tighter and then pluck it again?

• The rubber band would no longer make a sound.

• The rubber band would become colder.

• The rubber band would have a different pitch.

• The rubber band would vibrate at the same speed.

Tags

NGSS.MS-PS4-1

Garrett has four strings that are the same thickness and are made of the same material. Garrett cuts the strings to different lengths and pulls them to the same tightness.

When he plucks the strings with his finger, which string will have the highest pitch?

• The shortest string will have the highest pitch.

• It is impossible to say.

• The longest string will have the highest pitch.

• They will all have the same pitch.

Tags

NGSS.MS-PS4-1

What kind of vibration is required to create a low-pitched sound?

• weak

• fast

• strong

• slow

Jack taps the tubes one at a time on a set of chimes similar to those shown below. He notes that the pitch of the sounds made goes in order, with the longest tube having the lowest pitch and the shortest tube having the highest pitch. Which tube is vibrating the fastest?

• tube 3

• tube 1

• tube 2

• tube 4

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Jenny plucked a tight string. If Jenny made the tight string shorter and then plucked it, what would happen to the sound?

• The sound would be louder.

• The pitch would be higher.

• The sound would be quieter.

• The pitch would be lower.