Hello :)

For my assessment tomorrow, one of the things I have to think about is this:
"Explained how the ear defenders will work using the Big Idea of Energy Transfer."
I have no idea about this at all, please help!

Ear defenders??

http://www.google.com/#q=ear+defenders

No I mean we have to design ear defenders, and this is one of the things we have to do. We haven't even learnt about this big idea of energy transfer, so I'm really confused :\

http://www.jiskha.com/search/index.cgi?query=ear+defenders

http://www.google.com/#q=big+idea+of+energy+transfer+ear+defenders

Hello! I'd be glad to help you understand how to explain how ear defenders work using the Big Idea of Energy Transfer.

First, let's start by understanding the Big Idea of Energy Transfer. Energy can be transferred from one object to another, or it can be transformed from one form to another. When energy is transferred, the total amount of energy remains constant, but it can change its form - from potential energy to kinetic energy, or from mechanical energy to thermal energy, for example.

Now, let's apply this Big Idea to ear defenders. Ear defenders are designed to protect our ears from harmful noise levels. They do this by reducing the amount of sound energy that reaches our ears.

Here's one way you could explain it:

1. Start by explaining that sound energy is created when an object vibrates, causing air particles to move in waves.
2. Then, mention that these sound waves travel through the air and enter our ears.
3. Describe how ear defenders work by using the Big Idea of Energy Transfer. Explain that the ear defenders act as a barrier, absorbing or reflecting the sound waves before they can reach our ears.
4. Elaborate on how the ear defenders absorb or reflect the sound waves. You could mention that the energy from the sound waves is converted into other forms, such as heat energy or mechanical energy, within the ear defenders themselves.
5. Finally, highlight that the overall result is a reduction in the amount of sound energy that reaches our ears, protecting our hearing.

Remember to use the information provided here as a starting point and tailor it to your understanding and the level of detail required for your assessment. Feel free to add more information or use examples to make your explanation more comprehensive.

Good luck with your assessment!