Mechanical vs Electromagnetic
Is sound a mechanical or electromagnetic wave?
Mechanical.
What is the top of a transverse wave called?
Crest.
What is the formula for wave speed?
Speed = Frequency × Wavelength
In which type of wave do particles move up and down as the wave moves forward?
Transverse wave
Which part of the EM spectrum can we see?
Visible light.
Name one example of an electromagnetic wave.
Light, X-rays, radio waves, etc.
What is the bottom of a transverse wave called?
Trough.
If the wavelength is 4 m and frequency is 5 Hz, what’s the speed?
20 m/s
In which type of wave do particles move back and forth in the same direction as the wave travels?
Longitudinal wave
Which waves have the longest wavelength?
Radio waves.
Which type of wave can travel through space?
Electromagnetic waves.
What is the distance between two crests called?
Wavelength.
A wave travels at 10 m/s and has a frequency of 2 Hz. What is its wavelength?
5 meters
What are the crests and troughs found in?
Transverse waves
Which waves have the most energy?
Gamma rays.
Which wave type requires a medium to travel?
Mechanical waves.
What is the height from rest to crest or rest to trough?
Amplitude.
If a wave has a small amplitude, what does that tell you about its energy?
It has low energy.
What are the compressions and rarefactions found in?
Longitudinal waves
What type of EM wave is used in microwaves?
Microwave radiation.
Which travels faster: sound or light?
Light (electromagnetic waves travel faster).
In a longitudinal wave, what is the area where particles are bunched together?
Compression.
A wave has a speed of 30 m/s and wavelength of 6 m. What is its frequency?
5 Hz
A student pushes a slinky back and forth. What type of wave are they modeling?
Longitudinal wave
Put these in order from lowest to highest energy: infrared, X-ray, visible.
Infrared, visible, X-ray.