Numeric Questions
A wave traveling at 10 m/s has a frequency of 0.5Hz. What is its wavelength?
20m
The rate at which a waves covers a distance
Wave speed
Name all 7 waves of the EMS in order starting with the most energetic.
Gamma - X rays - UV - Visible Light - Infrared - Microwave - Radio
A type of wave that can travel through empty space
What are light waves?
Waves are produced with a frequency of 10Hz. What is the period of a single wave?
0.1s
The maximum displacement of a wave
Amplitude
Electromagnetic wave used in TV remote controls.
Infrared
This occurs when a wave changes speed when passing through a different medium
What is refraction?
A series of waves are produced with a frequency of 10Hz. How many waves will have been produced after 1 minute?
600
The distance from equilibrium to the trough
Amplitude
The 3 EM waves which carry enough enegy to damage living cells are said to be forms of ............ radiation.
Ionising
Occurs when a wave bounces off of an object
What is a reflection?
A wave with an amplitude of 2cm interferes with a wave of amplitude -2cm traveling in the opposite direction. What is the amplitude of the resultant wave?
0 cm (complete destructive interference will occur)
The change in direction and speed of a wave as it passes into a medium of a different density
Refraction
By accelerating charged particles
This is created when a wave strikes another making it more powerful.
What is constructive interference?
5 m/s. The frequency will change, not the velocity.
The area of a longitudinal wave where particles are furthers apart and density is at its lowest.
Rarefaction
What is the approximate wavelength of red light?
700nm
This is required for some types of waves to travel.
What is a medium?