Sound Flashcards
1
Q
Sound is produced by
A
Vibrations (vocal cords, air molecules, ear drum)
2
Q
Sound can travel through a
A
medium e.g. solid, a liquid or a gas
3
Q
Sound cannot travel though a
A
vacuum therefore it needs a medium to travel through
4
Q
Sound
A
Is a form of energy
5
Q
The speed of sound in air
A
Is 340m/s, light is 300000000
6
Q
An echo
A
is a reflection of sound.
7
Q
•Ultrasound
A
is sound above our level of hearing.
