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What are the two types of Waves
Transverse and longitudinal
What is a transverse wave?
A wave for which the oscillations are perpendicular to the direction of energy transfer
What is a longitudinal wave?
A wave for which the oscillations are parallel to the direction of energy transfer
Give two examples of transverse waves
electromagnetic waves
S-Seismic waves
Give two examples of longitudinal waves
Sound waves
Seismic P-waves
What are two parts of a longitudinal wave called?
Compressions
Rarefactions
Definition of amplitude
Maximum displacement of a point on a wave from its undisturbed position
What is wavelength?
The distance from a point on a wave to the same position on the adjacent wave
Definition of frequency
Number of waves that pass a given point each second
Units for frequency
Hz
Units for wavelength
M
Units for wave speed
M/s
What is the human hearing range?
20hz-20000hz
What is wave speed?
The speed at which the wave moves or at which energy is transferred through a medium
What does a wave transfer
Energy and information
Equation to calculate wave speed
Wave speed =frequency * wavelength
What word describes when a wave bounces of surface?
Reflection
How do soundwaves travel through a solid?
The particles in the solid vibrate and transfer kinetic energy through the material
What are ultrasound waves?
Waves with frequencies above 20 kHz
What are ultrasound waves used for?
medical and industrials imaging
What natural event causes seismic waves?
Earthquakes
What types of seismic waves are produced?
P waves
S waves
Difference between P waves and S waves
P-waves are called primary waves as they arrive the quickest
S waves are the fastest
P-waves travel through both solids and liquids
As waves only travel through solids
What technique is used to detect objects in deep water and measure water depth?
Echo sounding
High frequency soundwaves are admitted, reflected and detected
The waves speed formula is used to detect distance
Note 
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