Sound

Hunter has constructed a musical instrument out of a shoe box and rubber bands. The rubber bands are different thicknesses and are stretched around the box. Using what you know about sound, what is the most accurate statement?

• The thinnest rubber band will have the highest pitch

• The thickest rubber band will have the highest pitch.

• A The thinnest rubber band will have the lowest pitch.

• A The size of the rubber band will not affect the pitch.

Read the following information and answer the question.

A class is working an investigation with the following procedures:

1. Fill one bag with water, fill another bag with air, and fill the third bag with the wooden block.

2. Hold each filled bag up against your ear.

3. Tap the tuning fork on the bottom of your shoe and hold it tightly against the bag.

4. Record your observations

What are the students trying to discover?

• How does sound move through different states of matter?

• How strong are different brands of plastic bags?

• How loud are tuning forks after they have been tapped?

• How long does a sound wave travel?

Tags

NGSS.MS-PS4-2

2. Myra’s class is conducting a science experiment. The teacher gave each student a tuning fork. What are they exploring?

• heat conduction

• sound waves

• magnetic attraction

• simple machines

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

While studying about sound, the class was allowed to experiment with tuning forks. What safety rule should students follow?

• Only strike tuning forks against soft surfaces like the soles of shoes, not against hard surfaces.

• Do not strike tuning forks, they will cause a vibration.

• Do not hold tuning forks close to ears, they will produce a sound.

• Do not handle tuning forks.

While learning about sound, the students were asked to identify the names of different sounds heard on a recording. Matthew turned up the volume too high and put on his ear phones to listen. What should concern Matthew?

• Loud sounds will keep the other classroom noise quiet.

• Loud noises are hard to identify.

• Loud sounds can disturb the other students.

• Loud noises can harm your eardrums.

John and Marsha have made string telephones for their clubhouse. How are they able to hear sounds in these telephones?

• Vibrations travel through the string and make the cups vibrate.

• The cups are side by side.

• Sounds travel through the air and into the cups.

• They are yelling.

Tags

NGSS.MS-PS4-2

Long metal pipes are running through the school building. The students noticed they could communicate with other classrooms by tapping on these pipes with their pencils. How was this done?

• The tapping pencils transfer vibrations to the metal pipe that travel along to the different rooms.

• The metal pipes are hollow and sound travels through the middle.

• The pencils write out messages on the pipes.

• The tapping is loud and the other students can hear it from room to room.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How is sound transferred from Student A to Student B?

• The sound travels though the cups.

• The sound travels through the air.

• The sound travels through the string.

• The sound travels through their hands.

Tags

NGSS.MS-PS4-2

Which of the following produces a high-pitched sound?

• a bird's song

• a big drum

• the rumbling of a big truck

• a man's voice

In a class experiment, Sam is sliding a ruler under a stack of books and listening to the pitch the vibrating ruler makes. What should be in Sam’s science journal?

• The longer the length of the ruler showing, the lower the pitch.

• The longer the length of the ruler showing, the higher the pitch.

• The shorter the length of the ruler showing, the lower the pitch.

• The shorter the length of the ruler showing, the less change in pitch.

Tags

NGSS.MS-PS4-1