20 questions
Which electromagnetic wave has the greatest energy and is the most penetrating?
microwaves
visible light
gamma rays
Which electromagnetic waves are used in ovens and wi-fi communications?
Infrared rays
ultraviolet rays
microwaves
Which type of waves are used/were used in TV broadcasting?
radio waves
infrared rays
x-rays
For waves in any medium, as the frequency increases, what happens to the energy?
It also decrease
It stays the same
It increases
Which of the following has a wavelength longer than microwaves, and a lower frequency?
Infrared waves
Radio waves
Visible light
Which of the following has a frequency higher than ultraviolet rays?
visible light
infrared rays
x-rays
Which electromagnetic waves are used in devices such as heat lamps and TV remote controls?
ultraviolet rays
microwaves
infrared rays
Shorter waves have ____energy; longer waves___energy.
Lower;higher
Higher;lower
What is the electromagnetic spectrum?
A group of energy waves that are visible to the human eye.
The name given to a group of waves that mostly are invisible and can travel through space.
What is an example of a radio wave?
Remote control
Heat lamps
Which statement is true about visible Light?
Human eyes can't detect it and it has a higher frequency than infrared.
Human eyes can detect it and it has a higher frequency than infrared.
Human eyes can't detect it and it has a lower frequency than infrared.
Human eyes can detect it and it has a lower frequency than infrared.
Ultra violet light has
more energy than visible light.
more energy than X-ray.
more energy than gamma rays.
Microwaves have a
longer a wavelength than radio waves and higher frequency than radio waves.
shorter a wavelength than radio waves and higher frequency than radio waves.
Too much ultra violet light can cause cancer.
True
False
Ionizing energy has the abilty to remove an electron.
True
False
List an effect of having radiation sickness.
Wavelength are measured in hertz.
True
False
What are the three safest forms of radiation?
Humans are able to detect more than one type of radiation on the elecromagnetic spectrum.
True
False