| How are Sound Waves Caused? | -Simply from Vibrating Objects |
| How are these Vibrations passed along? | -Since its a Longitudinal Wave, it used a Series of Compressions and Rarefactions-and the Wave will follow Suit |
| What happens when a Sound Wave comes from a Loudspeaker and hits something Solid? | -Sound Wave created from the Diaphragm Movement, creating Vibrations in the Air
-They create Compressions and Rarefactions in the Air with the Air Particles [Air Particles do NOT move, they just Push the Vibration along]
-When it hits a Solid, the Particles that Experienced it will begin to Vibrate, and that Vibration will hit the next Particles, passing the Sound Wave through the Object. |
| How does Sound travel in, and what happens to the Frequency and Wavelength:
-Solids
-Liquids
-Gases | -It is the Fastest in Solids, and its Wavelength gets Bigger in it, but the Frequency will stay the Same
-It is the 2nd Fastest in Liquids, and its Wavelength will be Smaller compared to it being in a Solid, but bigger compared to-
-Slowest in Gases, and has the Smallest Wavelengths. Frequency will still be the Same though |
| Why is it Hard to Spot the Direction in Refracted Sound Waves? | -This is because of how Spread out they can be, so it requires Precision and Time. |
| What are Echoes exactly? | -This is simply Reflected Sound Waves, often from a Hard Flat Surface |
| Why can Sound not Travel in a Vacuum? | -This is because Sound Waves need Particles to carry the Vibration, and a Vacuum is almost Empty |
| How can the Human Body hear Sound? | 1. The Sound Waves will hit your Ear Drum, which means it'll Vibrate
2. Those Vibrations are given to Tiny Bones [Ossicles] and then goes through the Semi-circular Canal, and finally the Cochlea
3. The Vibrations are turned into Electrical Signals, which is done thanks to the Cochlea
4. The Brain sees the Signal of the Sound as Different Pitches and Volumes; this is Dependent on the Frequency and Intensity. Higher Freq = Higher Pitch. |
| What is Human Hearing limited by? | -The Size and Shape of the Eardrum, as well as the Structures that Vibrate to Transmit the Soundwave |
| What is the Range of Human Hearing? Why can the Upper Limit decrease as you get Older? | It is from 20Hz, to 20,000 Hz
-As you get Older, the Cochlea or the Auditory Nerve may Decline meaning the Higher Pitching Sounds will need to be Lower |
