Basic Wave Properties
This is the distance between two consecutive crests
What is the wavelength?
This type of wave transfers energy without transferring matter overall.
What is progressive / travelling wave?
This is the region of high pressure in a longitudinal wave.
What is a compression?
These waves have the longest wavelength in the EM spectrum.
What are radio waves?
This occurs when waves bounce off a surface.
What is reflection?
This is the number of waves passing a point per second.
What is the frequency?
In this type of wave, oscillations are parallel to the direction of energy transfer.
What is a longitudinal wave?
This property of sound relates to its loudness
What is amplitude or intensity?
These waves are used for cooking food in microwave ovens.
What are microwaves?
This is the change in wave speed when it enters a different medium.
What is refraction?
This is a wave property that is measured in metres per second.
What is the wave speed?
This type of wave has oscillations perpendicular to the direction of travel.
What is a transverse wave?
Greater than 20 000 Hz
What frequency can humans not hear above?
OR
What frequency is ultrasonic?
The wavelengths get smaller when this increases
What happens to the wavelength of EM waves when the frequency increases?
This is the bending of waves when they pass through an opening where the wavelength is about the same size .
What is diffraction?
This is a imaginary line which connects all points that are in phase together.
What is a wave front?
This type of wave has areas of compression and rarefaction?
What is a longitudinal wave?
This property of sound determines how high or low it is perceived.
What is pitch?
These waves have higher energy than visible light and can cause sunburn.
What are ultraviolet waves?
When two or more waves meet, the resultant displacement is the sum of the individual displacements
What is superposition?
This quantity is a measure of the position of a wave within a wave cycle.
What is the phase?
This type of wave can travel through a vacuum.
What is an electromagnetic wave?
You must remember to divide by the time by 2
What must you remember to do to the time when measuring distance to an object with a echo?
because the electric fields are perpendicular to the direction of wave travel
Why are EM waves all transverse waves?
The difference in length travelled by one source to a given point AND by another source to the same point.
What is the path difference?