1
Q
what do sound waves require?
A
Particles
2
Q
How is sound made?
A
When an object vibrates
3
Q
What does sound travel fastest and slowest in?
A
Fastest in solids
Slower in gases
Cannot travel through a vacuum
4
Q
What is a compression?
A
When particles are closest together
5
Q
What is a rarefaction?
A
When particles are further apart
6
Q
How do we calculate the speed of sound?
A
speed= distance/time
(Distance divided by time)
e.g iron travels at a distance of 1000. It takes iron 0.17 (17 seconds) to travel that distance. Calculate the speed.
= 1000/0.17= 5882…/5880
7
Q
Give the equations of how to calculate sound (e.g distance, time and speed of sound)
A
Distance = speed x time
Time= distance/ speed
Speed= distance/time
