Sound do require matter to be heard. For example, Air, when you clap, the air molecules vibrates, that vibration produces sounds that reaches to your ears.
3. True
Like I said in the previous statement; Vibrations produces sounds through matter.
4. True
Yes, sound travels faster in Solid that's because Solid molecules are very compact which means it can transmit sounds faster, compared to Air molecules which is very far apart and makes sounds transmit less fast.
5. True
Most sounds travel through the matter called Air, it is because it's vast.
6. True
They travel at different speeds depending on the medium they are travelling through (Solid, liquid, Gas).
7. True
That is the basics about sounds; All sounds generate when something vibrates.
8. True
That's because liquid molecules are not completely compact which slows the transmittance of sounds compare to solids which are totally compact.
9. False
It's not, because the speed of vibrations are the same with sound waves.
10. True
You know, we already talked about this... so you should know it by now.
Answers & Comments
Answer:
2. True
3. True
4. True
5. True
6. True
7. True
8. True
9. False
10. True
Hopefully you did learn a bit from my explanations
peace.
-Hen˖꒰✿꒱˖