Question | Answer |
What is a wave? | -Travels through medium
-Any disturbance that transmits energy trough matter or empty space. |
What is a medium | Substance in which a wave can travel |
What is a mechanical wave | Waves that need a medium. (will not transfer energy without one) |
What is an example of electromagnetic waves | Visible light, microwave made by microwave ovens |
What kind of waves do not need a medium? | Electromagnetic waves |
What are the 2 types of waves | Transverse and longitudinal |
What are transverse waves | Wave in which the particles in that wave move perpendicularly |
What are longitudinal waves | Waves in which the particles in that wave move back and forth/parallel |
What is a crest | Highest point of transverse wave (top part) |
What is a trough | Low point of transverse wave |
Surface wave | When a transverse wave and longitudinal wave combine |
Difference between transverse and longitudinal waves | These waves are different because the particles move/vibrate in different directions. Transverse= Vibrate in a perpendicular motion
longitudinal= back and forth/parallel motion |
wave speed formula | V = y x f Y is upside down |
wavelength formula | Y = v/f Y is upside down |
frequency formula | F= v/y Y is upside down |
Reflection | When a wave bounces back off a barrier |
Example of reflection | Mirror reflections, echo |
Refraction | The bending of a wave as the wave passes from one medium to another at an angle |
Diffraction | Bending of wave around a barrier or through an opening |
Example of diffraction | Sound bends around objects. |
Interference | Result of 2 or more waves overlapping in the same space |
2 types of interference | Constructive & destructive |
Constructive interference | Increases the amplitude |
Destructive interference | Decreases or cancels the amplitude |
Standing waves | Looks like loops standing still (one wave overlapping another) |
Resonance example of music | Your body resonants with the music at the same frequency. |