The Echo Exterminator

Sound Intensity

Sound

Level (dB) Empty box

Intensity

Sound

Intensity

Sound

Intensity

Level (dB)

Level (dB)

Level (dB)

(Name of material)

(Name of material)

(Name of material)

First Measurement Second Measurement Third Measurement Average

Sound Intensity Level (dB)

2.

Prepare a bar graph like the one below which you will use to chart your measurements :

80 ‫צמ‬ ‫ר‬ 75 ‫גפ‬ ‫צמ‬ ‫ן‬ ‫ר‬ 70 ‫גפ‬ ‫צמ‬ ‫ןר‬ 65 ‫גפ‬ ‫ןצמ‬ 60‫ר‬ ‫גפ‬ ‫צמ‬ ‫ןר‬ 55 ‫גפ‬5 5 ‫צמ‬ 50‫ן‬

‫ ר‬Empty Box ‫צמ‬ ‫רגפ‬ ‫ןגפ‬ ‫ן‬

Toilet Paper

Sponge

Felt

Styrofoam

Cotton Wool

Cardboard

Note: You must remain quiet while conducting this experiment

1.

2.

Place the sound source at one end of the shoebox - use the adhesive tape to fix it in place (see illustration below).

Place the Sound sensor at the opposite end of the shoebox - use the adhesive tape to fix it in place (see illustration below).