Electromagnetic Spectrum
What is the full range of electromagnetic waves called?
Electromagnetic Spectrum
What do we call the distance from one wave crest to the next?
wavelength
Do waves transfer energy, matter, or both?
energy
True or false: an electromagnetic wave has to have a medium to travel through
false-they can travel through space
All waves carry and transfer ______________.
Energy
Which type of electromagnetic wave has the longest wavelength?
radio
What do we call the number of waves that pass a point each second?
Frequency
Which electromagnetic wave carries the most energy?
gamma rays
Electromagnetic waves travel at the speed of ________ (light or sound)
light
A mechanical wave must travel through ________.
matter or a medium
Which type of electromagnetic wave can be seen with our eyes?
visible light
If wavelength gets shorter, what happens to frequency?
the frequency goes up or increases
If a wave's energy is high, the frequency is high/low.
high
Sunscreen blocks out which type of electromagnetic wave?
UV rays
Sound Waves are ______________ (longitudinal or transverse)
longitudinal
Which type of electromagnetic wave is used by airport security scanners and can pass through skin?
x-rays
The longer the wavelength the more/less energy the wave has.
less
Which has a higher frequency: visible light or infrared light
visible light
Which type of wave can broadcast signals for the internet, radio, and cell phones?
radio
True or false: temperature affects how sound Waves travel
true
How many types of electromagnetic waves are on the electromagnetic spectrum?
Which unit is used to measure frequency?
Hertz or Hz
Why are gamma rays and X-rays more dangerous to living cells than radio waves?
They have a much higher energy and can damage cells.
radio, microwave, infrared, visible light, UV rays, x-rays, gamma rays
When light waves bend as they pass through a new medium it's called ___________.
refraction