Saturday, 19 March 2011

Bill Nye Video


SOUND!
1. What is sound?
Sound is an energy made by vibrations. When an object vibrates, it causes movement in the air particles, these particles bump into the particles close to each other, which makes them vibrate too causing them to bump into more air particles.

2. Does sound travel faster in a brick or in the air and why do you think that is?
Through a brick because it vibrates!

3. Do the individual particles in the air move to your ear to make sound?
They don't move very much.

4. Which creates longer wavelengths, high pitched or low pitched sounds?
Low pitched sound.

5. How many different notes are there in most music?
12.

6. How does the whisper dish work?
It funnels it.

7. What is it called when something vibrates at its' natural frequency?
Resonance.

8. How does the outer ear help you hear?
It's designed to catch sound.

"
To the Master's honor all must turn, each in its' track, without a sound, forever tracing Newton's ground."
- Albert Einstein



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