Waves

Waves

1. Parts of a Wave

   • Amplitude
     • Displacement from the rest position
   • Wavelength
     • Length of a full wave cycle (crest to crest
   • Crest
     • Higher peak of a wave
   • Rest Position
     • Is the horizontal line
   • Trough
     • Lower peak of a wave
   • Frequency
     • Number of complete waves passing a point per second

2. Types of Wave

   • Transverse
     • Sideways motions
       • Ripples on water
   • Longitudinal
     • Vibrations
       • Slinky when pushed at the end

3. Light Rays

   • Normal line is perpendicular to the surface
   • Angles of incidence is equal to reflection
   • The image in the reflection is called the virtual image

4. EM Waves

   • Radio Waves
   • Micro waves
   • Infrared
   • Visible light
   • Ultraviolet
   • X-Rays
   • Gamma rays

5. Sound Waves

   • Generally travel faster through a solid than a liquid
   • It is impossible for sound waves to travel through a vacuum
     • There's no particles for them to travel through

6. Refraction

   • Change the speed of a wave
     • Light travelling through a pane of glass
       • Ray of light is 'bent'
   • Doesn't happen if the ray is traveling along the normal line
   • Occurs when a ray meets a medium at an angle