Wave Parts and Properties
What type of wave perpendicular to the directiion of disturbance?
transverse wave
What causes sound waves?
Vibrating particles of a sound source
How many regions are on the EM spectrum?
7
What EM wave is used to see bone fractures?
X-rays
What does the frequency change in a sound wave?
Pitch
What type of wave moves parallel to the direction of disturbance?
longitudinal wave
What are the 2 parts of a sound wave?
Compressions and rarefactions
What is an example of something that emits UV light?
the sun, tanning beds, blacklight
What 2 EM wave types are used to treat cancer?
gamma rays and x-rays
What increases the overall energy of a wave?
Increasing Amplitude or Frequency
What is frequency of a wave?
the number of wave cycles per one second. Measured in Hertz (Hz)
What does amplitude change in a sound wave?
Volume
What is the shortest wavelength on the EM Spectrum?
gamma
What EM wave is used in cell phone technology?
Microwaves
What is the longest wavelength on the EM Spectrum?
radio waves
What is wavelength (transverse waves)?
The distance between two of crests (or troughs) on consecutive waves
Which visible light wave has the shortest wavelength?
Violet
Infrared waves are electromagnetic energy that give off what?
heat
What EM waves are used by human skin cells to make Vitamin D?
Ultra-Violet Waves
Which has higher energy and frequency: x-rays or uv light?
x-rays
What happens to the wavelength as frequency increases?
The wavelength decreases
What are the 2 main differences between light and sound waves?
Light is a transverse wave that can travel through media and vacuums
Sound is a longitudinal wave that can only travel through a medium.
The EM spectrum is divided into different regions, according to...?
decreasing wavelength, increasing energy and frequency
What EM wave is used to send and receive information over long distances?
Radio Waves
What is the order of the 7 regions of the EM spectrum in order of increasing frequency?
radio, microwaves, infrared, visible light, uv, x-ray, gamma rays