4. Waves - Refraction & Reflection Flashcards
(19 cards)
Transverse waves
Particles move perpendicular to the wave motion (energy)
Longitudinal waves
Particles move parallel to the motion
Frequency
Number of waves that pass a point per second
Frequency measurement
Hertz (Hz)
Examples of transverse waves
- Electromagnetic waves
- S waves
Examples of longitudinal waves
- Sound waves
- Ultrasound waves
- P waves
A difference of the 2 waves
Transverse waves are perpendicular to the wave motion whereas longitudinal are parallel to wave motion
Wavelength
Distance from one point on a wave to the same position on the next wave
Amplitude
From top OR bottom of a wave to the middle
Waves transfer…
energy and information without transferring matter
Refraction is when…
a wave is transmitted through a material
Refraction can happen when a wave…
crosses an interface between two different materials
The normal is a line…
drawn at right angles to an interface
When light travels from air into water…
it bends towards the normal
When light travels from water into air…
it bends away from the normal
Refraction when light goes from air into water…
is similar to refraction when light goes from air into glass (bends towards the normal)
If a ray of light crosses an interface at right angles…
its direction does not change
Reflection is when…
a wave rebounds off the surface of a material
