How can we Amplify Sound?

Today's engineering adventures involved how sound is absorbed and reflected, and how to amplify sound. The first task involved the age old project of stringing two cups together to transfer sounds and words to a partner. Students then experimented with cup linings that included plastic sheets, aluminum foil, foam, and paper. During this experiment we talked about variables and how they can detract or add to your results. We worked hard to conduct good science during our experimentation.

Secondly, we discovered how a kazoo works, and worked at varying pitch and volume. Then we created amplifiers to increase the volume of the sound of the kazoo. Tomorrow students will continue tweaking their designs to get the most volume out of their kazoos.

 Your string needs to be this long.

 Isabella gets the right length.

 Tying a washer on the end helps the string not pull through. 

Trying it out but the string needs to be taut.

 Oli making sure his voice is heard.

Working in a team of 3? No problem for these guys!

 Experimenting with the door separating her partner.

 How many phone lines can you hook together?

 Trying out the kazoo.

 Creating a kazoo speaker.

Kaylee goes big!