Electromagnetic
What is the LONGEST wave with the most energy on the electromagnetic spectrum?
Radio Waves
How does the Doppler Effect work?
As an object produces sound while moving, the distance between compressions of sound change
Tranverse Wave:
A wave that does not need a medium to travel through
What is a wave?
A disturbance that transfers energy from one place to another, often through a medium, without the actual movement of the medium itself.
The number of waves per second
Frequency
Why are AM radio waves so much easier to receive than FM radio waves?
Because they have a longer wavelength and can diffract around buildings.
How do noise canceling earphones work?
They use a microphone that intakes the sound, then runs interference to block it out.
A wave that NEEDS a medium to travel through:
What is amplitude?
A measure of the magnitude of the disturbance
Media for the speed of sound: Rank from fastest to slowest to cannot travel
Gas
Liquid
Solid
Vacuum
What is the most dangerous wave on the electromagnetic spectrum?
Gamma
Longitudinal
Waves sent in COMPRESSIONS (sound in general)
Compression waves
What is wavelength?
The distance between a point and an identical one.
Media for the speed of light: Rank fastest to slowest
Vacuum
Gas
Liquid
Solid
False
True or False: The speed of sound generally increases as it moves from gases to liquids to solids?
True
Electromagnetic Wave:
Light
Crest?
The high points of a wave
Why can't some waves travel through vacuums?
Because they need a medium to travel through.
Which type of light wave travels the fastest?
None of them
Why can't sound waves travel through space?
They cannot travel through a vacuum because they need particles to carry the energy
Mechanical Wave:
Sound waves- need a medium
Trough?
The deep points of a wave
True or false? Some types of sound waves can travel through a vacuum.
False