Exam Revision - Sound Flashcards
A wave is
A vibration that transfers energy or information from one place to another without transferring particles themselves
What are the two types of waves
Transverse & Longtitudinal
Examples of Transverse waves
Water Waves
Light waves
What is a transverse wave
A wave that the particles vibrate in right angles to the direction the which the wave energy is travelling
What is a longitudinal wave
The wave particles vibrate along parallel to the direction of the energy flow
Example of Longitudinal waves
Sound Waves
Ultrasound waves
The region of longitudinal wave where the particles are compressed is called the
Compression
The region of longitudinal wave where the particles are more spread out is called the
Rarefraction
The amplitude is defined as
The maximum distance from the rest position
The wavelength is
Defined as the distance from one point of a wave to the same point on the next wave
The speed of the wave is
The distance it travels in 1 second
The frequency of a wave is
The number of waves that pass in one second
Measurment of frequency
Hz
If 10 waves pass a point in 1 s what’s its frequency
10
If 100 waves pass a point in 5s what’s its frequency
20
