Equations
'Frequency of a Wave'
f=1/T
f= frequency
T= period
This is a disturbance that carries energy through matter or space without transferring matter.
What is a wave?
Simple Harmonic Motion occurs in this object which is made up of a bob suspended by a string or a light rod swinging back and forth
What is a simple pendulum?
This stationary point marks where two equal wave pulses meet and are in the same location, having a displacement of zero.
What is a node?
This 'not so unusual' term is the line in a ray diagram that shows the orientation of the barrier or mirror and is drawn at right angle, or perpendicular, to the barrier or mirror.
What is normal?
Wavelength
λ = v/f
λ= wavelength
v= velocity
f= frequency
This is a single bump or disturbance that travels through a medium
What is a wave pulse?
Any system in which the force acting to restore an object to its equilibrium position is directly proportional to the displacement of the object is demonstrating this.
(Think peace, love and ..)
What is simple harmonic motion?
No, its not a cure to a poison. This term is the point with the largest displacement when two wave pulses meet.
What is the antinode?
This is the change in direction of waves at the boundary between two different mediums.
What is refraction?
Wave Velocity
Δd/Δt = v
v= velocity
Δd = displacement of one of the wave's crest/compressions
Δt= time interval
This mechanical wave type is when the disturbance is in the same direction, or parallel to the direction of wave travel.
What is a longitudinal wave?
Adjust your radios! This term is the number of complete oscillations a point on a particular wave makes each second.
What is frequency?
This occurs from superposition of two or more waves can be destructive or constructive.
What is interference?
Hope the sun is shining on you for this term. It is a line drawn at a right angle to a wavefront; represents the direction of wave travel.
What is a ray?
Hooke's Law (when relating to a spring)
F = -kx
F= Force exerted by the spring
k = spring constant
x = distance spring is stretched
This is type of wave occurs when a pulse strikes the boundary between two mediums.
What is a incident wave?
This occurs when forces are applied to a vibrating or oscillating object at time intervals equal to the period of oscillation. Mr Lock used the analogy of a parent pushing a child whose swing was already moving.
What is resonance?
All rise! This type of wave appears upright and still, produced by the interference of two travelling waves moving in opposing directions.
What is a standing wave?
This line represents the crest of a wave in two dimensions that can show the wavelength, but not the amplitude, of the wave when drawn to scale.
What is the wavefront?
Potential Energy in a Spring
PE spring= 1/2 kx^2
k = spring constant
x = spring displacement
This wave is returning due to some of the energy of the incident wave's pulse being reflected backward.
What is a reflected wave?
The shortest distance between points where the wave pattern repeats itself is defined as this.
What is the wavelength?
This idea states that the displacement of a medium caused by two or more waves is the algebraic sum of the displacements of the individual waves.
What is the principle of superposition?
This law states that the angle of the incidence is equal to the angle of reflection.
What is the law of reflection?