Science / Sound for Clubs

Use a Balloon to Amplify Sound

Small sounds can still make a loud noise when you use a good sound conductor. Experiment with a balloon, compressed air and your own ears to find out how it works and the science behind it.

What you'll need:

• Balloon(s)

Instructions:

1. Blow up the balloon.
2. Hold the balloon close to you ear while you or someone else tap lightly on the other side.

What's happening?

Despite you only tapping lightly on the balloon your ears can hear the noise loudly. When you blew up the balloon you forced the air molecules inside the balloon closer to each other. Because the air molecules inside the balloon are closer together, they become a better conductor of sound waves than the ordinary air around you.

King Street Bridge

Summary

WALT: Write a summary about our Reading Journals.

King Street Bridge

By Hinemoana Baker

This article is about a girl named Hera getting bullied by two girls named Lyza and Rebecca.

• Lyza and Rebecca bullied Hera just because she was Maori.
• Hera has a friend named Jules.

On King Street Bridge, Hera had lost her lunch to an Eel, so she was feeling pretty dizzy on her way to School today. Hera walked to School with Jules, and when they got there, Jules gave her a greenstone taonga to keep for a while.

After School was finished, Hera was going home now, again crossing the King Street Bridge. As she was walking, she could see Lyza and Rebecca, the two bullies, waiting for her at the bridge. Hera was about to approach them, but Hera was feeling a bit dizzy again. Lyza and Rebecca were calling her names and mocking her. When Hera got closer. She fainted…

When Hera fainted.. Lyza and Rebecca were very worried, they thought she had died.

After that happened, Hera told Jules everything. Lyza and Rebecca walked past them, Lyza said “Hi, Hera” and Hera smiled. Lyza and Rebecca were so scared, they didn’t want to bully her again.

This is Hera waking up from when she fainted.