Waves
A wave has a frequency of 10 Hz and a wavelength of 4.5 m. Calculate the speed of the wave.
45 m/s
What is a mechanical wave?
A wave that needs a medium to transfer energy
A wave has a speed of 980 m/s. The wavelength of the wave is 4 m. What is the frequency of the wave?
245 Hz
The highest point of a transverse wave
Crest
The amount of waves that can pass a given point in 1 second. Measure in Hz
Frequency
What kind of wave does sound travel as?
longitudinal waves
Give me an example of a mechanical wave
Sound wave, ripple in water, wave at a sporting event
List the EM waves in order from the lowest energy to the highest energy.
Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma
The parts of a longitudinal wave that are closest together
Compression
As the energy of an EM wave increases, _______ the decreases.
Wavelength
Give me 3 examples of a medium
Air, Water, Particles, Strings, Solids, Liquids, Gas
What are the two types of mechanical waves?
Transverse and Compressional
Which EM wave cannot be seen but can be felt.
Infrared
This is anything that has mass and takes up space.
matter
As the energy of an EM wave increases, so does the _________.
frequency
This type of wave needs a medium to transfer energy.
What is a Mechanical wave
How do transverse waves travel?
Up and down or back and forth at right angles to the direction the wave travels
Name the 3 EM waves that come from the sun
Visible light, UV and Infrared
The distance from the midline to the bottom of the trough or to the top of the crest
Amplitude
A wave has a frequency of 800 Hz and a speed of 4000 m/s. Calculate the wavelength of the wave.
5 m
A wave carries __________without carrying _______.
A wave carries energy without carrying matter.
Instead of a crest and a trough, what do longitudinal waves have?
Compression, Rarefraction
What makes EM waves different from Mechanical Waves
They do not need a medium to travel
This is the speed of EM waves.
speed of light
Why does sound not travel in space?
Sound needs air to travel. There is no air in space.