Waves

Waves

1. Types of Waves

   • Transverse Waves
   • Longitudinal Waves
   • Sound Waves
   • Heat Waves
   • Water Wave
   • Light Wave

2. Wave Equations

   • velocity = fλ
   • v = x/t
   • v/f (fraction) = λ,
   • v = x/f
   • s = d/t
   • d = sxt

3. Wave Speed

   • v = x/t
     • i.e. 20/2 = 10
   • v = fλ
     • i.e. 23 x 7.2 = 265.6
   • s = d/t
     • i.e. 10/30 = 0.33m/s

4. Seismic Waves

   • Shockwaves produced by earthquakes, they are able to be detected by seismographs.
   • Some waves are surface waves whereas others travel through the earth
   • Two types of seismic waves P waves (longitudinal) and s waves (Transverse)

5. Em Waves

   • Electromagnetic waves are the collective term for the waves found in the electromagnetic spectrum,
     • i.e. microwaves, infra red, visible light and x rays.
       • They can be used for seeing (visible light).
     • Can be used for killing cancer cells (gamma)
     • Cooking (microwaves)

6. Refraction

   • When light hits the glass block the ray of light ends up in a different place
     • For example, the higher the angle of incidence, the higher the angle of refractoin
   • If you shine a ray of light through a glass bock with an angle of incidence at 45Degrees, the result is that the ray of light reflects back at the glass block