1. A traveling position around a central point that transports energy but not matter. There are two main types of waves.
1.1. Transverse Waves: A wave vibrating at right angles to the direction of its propagation.
1.2. Longitudinal Waves: A wave vibrating in the direction of propagation.
2. How to find different parts of a wave
2.1. Hz= cycle/s (Frequency= cycle/second)
2.2. T=1/f (period= 1/ frequency)
2.3. V=fλ (speed m/s=frequency Hz x wavelength m)
3. Interference: A wave behavior that describes how two or more waves affect each other when they meet.
3.1. Principle of Superposition- states that when two or more waves combine, the amplitude of the resulting wave is equal to the algebraic sum of the amplitudes of the individual waves.
3.2. Constructive Interference: A type of interference where two or more waves with amplitudes in the same direction meet and the amplitude of the resultant wave is larger than any of the individual waves.
3.3. Destructive Interference: A type of interference where two or more waves meet with equal but opposite amplitudes and the resultant wave is zero.
4. Doppler Effect: The apparent change in frequency that comes from the motion of either the wave source or the observer.
5. Reflection: The change in direction of a wave when it strikes a boundary.
5.1. The Normal is the imaginary line drawn perpendicular to the boundary.
5.2. The incoming wave is called the Incident Wave. (Forms with the normal)
5.3. The angle formed between the incident wave and the normal is called the Incident Angle
5.4. The Reflected wave also forms an angle called the Reflected Angle
5.5. The reflected angle is equal to the incident angle.
6. Refraction: The change in direction of a wave when it passes from one medium to another.
6.1. The index of refraction of a medium indicates how the speed of a wave will be affected while it is traveling in that medium.
6.2. when the wave goes through refraction, an incident angle and a refracted angle are formed.
6.3. The refracted wave is formed between the refracted wave and the normal.
7. Diffraction: The slight bending of light as it passes around the edge of an obstacle.
7.1. This what allows us to hear music around corners.
