Spectrum order
Which EM wave has the longest wavelength?
Radio waves
What happens to wavelength as frequency increases?
wavelength decreases
Which EM waves are commonly used to transmit radio broadcasts?
radio waves
Which carries more energy per photon: Blue light or red light
Blue light
Can EM waves travel through empty space?
Yes
Which EM wave has the highest frequency?
Gamma rays
Which has the higher frequency: Blue light or Red light ?
Blue light
Which waves are used in microwaves ovens to heat food?
Microwaves
Which has greater photo energy: microwaves or UV waves?
Ultaviolet waves
Which visible light color has the longest wavelength?
Red
Put these in order from lowest to highest frequency
Visible light,radio waves,Xrays
Radio waves, visible light, X rays
Two EM waves travel through a vaccum .Wave A has a shorter wavelength than wave B .which has the higher frequency?
Wave A
Which waves allow a TV remote control to communicate with a television?
Infrared waves
Why can excessive UV exposure damage skin?
UV radiation can damage molecules,including DNA ,in skin cells
A student says radio waves travel slower than gamma rays in a vacuum because they have lower frequency.Is the student correct?
No .Both travel at the speed of light in a vacuum.
Which has a lonnger wavelength : UV or Infrared?
Infrared
Why do all EM waves travel at the same speed in a vacuum ,Despite having different frequencies?
All EM waves travel at the speed of light in a vacuum.
Which waves are commonly used to produce images of bones?
X rays
Which has greater photon energy X rays or infrared waves
X rays
A satellite uses EM waves to send data to Earth .why can the signals travel through space?
EM waves do not need medium to travel.
Name the 7 major regions of the electromagnetic spectrum from longest to shortest wavelength?
Radio, Microwave, Infrared ,visible ,Ultraviolet, X ray, Gamma ray
An EM wave's wavelength decreases by half in a vaccum. What happens to its frequency?
Its frequency doubles beacause wave speed remains constant.
A doctor wants to treat certain cancers using highly energetic EM radiation .which region may be used?
Gamma Rays
A wave has a frequency that is 3 times another wave's frequency.How do their photon energies compare?
Has 3 times photon energy
A wave has a very short wavelength and very high frequency .what can you infer about its energy , and name one part of the spectrum that fits?
It has high photon energy. X rays or gamma rays are examples.