Here are a list of current wave resources. I will add more as I go through them. Thanks to other schools if you have kindly supplied material. I really appreciate it as do my students.
waves-summary-notes-gairloch1 Some of these notes are for National 4, use with the content statements so you don’t spend too long learning the National 4 work.
vflambda-vdt This starts with a practical model that you can complete in class using the Virtual Physics/ Flash Learning. It then shows how v=fλ is equivalent to v=d/t. Finally some questions will let you practise what you know.
Here are some definitions to learn for the waves topic. Remember you must be able to spell:
REFLECT, DIFFRACT and REFRACT
the distance from the middle of the wave to the top (or the bottom) measured in metres. Maximum displacement from the mean position!
maximum disturbance of the particles in a wave. (or distance from middle to top of wave) (m)
Angle of incidence
the angle between an incident ray and the normal (a line perpendicular to the reflecting surface at the point of incidence) (°)
Angle of reflection
the angle between a reflected ray and the normal (°)
Angle of refraction
the angle between the light ray in the more optically dense material and the normal. (°)
The critical angle is the angle of incidence above which total internal reflection occurs. (°)
occurs when wave meet a barrier, the waves bend around an obstacle. Long waves diffract more thank short waves.
Energy and waves
Waves transmit energy. The greater the amplitude the more energy is transferred.
the number of waves per second. Frequency is measured in hertz (Hz).
number of waves produced or passing a point per second. (Hertz or Hz)
Law of reflection
The angle of incidence = the angle of reflection
In a longitudinal wave the particles move along the line of the direction of travel of energy.
a line at 90° to the surface at the point of incidence, (from which all angles are measured.)
Time for one wave to pass a point or time for one wave to be produced. (s)
Principle of reversibility of light
The principle of reversibility of light states that a ray of light which travels along any particular path from some point A to another point B travels by the same path when going from B to A.
when a wave “bounces off” a surface we say it is reflected. (Particles can also reflect)
when light waves travel from one material to another the waves slow down and there is a reduction in wavelength in the optical thicker material. Unless the waves enter along the normal there is also a change of direction.
rate of covering a distance. Number of metres travelled per second. (ms-1) The speed of the waves is represented by the formula
Total Internal Reflection
When a wave hits a boundary at an angle larger than the critial angle the wave is entirely reflected if the material on the other side of the boundary is less optically dense.
In a transverse wave the particles move at 90 degrees to the direction of the flow of energy.
a way of transferring energy.
the speed at which the wave travels
the distance between the same point on successive waves.
the distance between two successive points on a wave. (metre or m)
The wavelength of a wave is the horizontal distance between two adjacent troughs or crests or any two corresponding points on the wave