Waves
Mechanical waves - Mechanical waves are waves caused by a physical disturbance.
A medium - A medium is a material that waves need inorder for them to travel, some waves do not need a medium.
Propagation - Propagation is the movements of waves.
A reflection - A reflection is when soundwaves hit a wall and rebounce back to another area.
An echo - An echo is a reflection of sound.
Seismometer - A seismometer is a device used to measure earthquakes.
Interference - Interference is an event where 2 waves align together to either create a bigger wave or make a wave smaller.
Constructive interference - This interference is when 2 waves overlap each other and create an even bigger wave.
Destructive interference - A destructive interference is when 2 waves overlap each other but gets canceled out or get smaller.
Tranverse waves - A transverse wave is a wave that moves up and down.
Electromagnetic spectrum - A group of transverse waves that includes radio waves, microwaves, infrared, visible light, ultraviolet, x rays and gamma rays
Longitudinal waves - A longitudinal wave is a wave that moves forward and backwards.
Amplitude - The maximum height of an oscillation from the equilibrium line.
Frequency - Frequency is the number of waves that pass in one second.
Time period - Time period is the amount of time a complete wave takes to pass.
Wavelength - A wavelength is the distance from one wave to another wave.
Seismic waves - Seismic waves are waves caused by earthquakes.
Infrasound - The sound Hz below 20
Ultrasound - The sound Hz above 20, 000
Cornea - The cornea is a sort of barrier to prevent your eye from getting infected.
Aqueous humour - This part of the eye provides nutrients to the eye and helps maintain the pressurized state.
Iris - This is an coloured part of an eye.
Lens - This is a part of the eye which allows us to see clearly and farther.