Waves in the electromagnetic spectrum can all travel through a vacuum at the speed of light. The wide range of frequencies and wavelengths of different waves have a variety of uses.
What is the speed of light?
What do bands of the electromagnetic spectrum have in common?
They all have the same wavelength
They all travel at the same speed
They all have the same frequency
The colours in the multiple choice answers should be in order of increasing wavelength.
Which one is correct?
Red, green, blue
Green, blue, red
Blue, green, red
The parts of the electromagnetic spectrum in the answers should be in order of increasing frequency.
Which answer is correct?
Radio waves, Microwaves, Ultraviolet, Infrared, X-rays
Radio waves, TV waves, Microwaves, X-rays, Infrared, Ultraviolet
Radio waves, Microwaves, Infrared, Ultraviolet, X-rays
What is the wavelength of a radio wave of frequency ?
What is the frequency of microwaves with a wavelength of ?
What is the wavelength of an UV ray with frequency ?
What is a good detector of X-rays?
A Geiger-Muller tube
How does microwave radiation differ from ultraviolet radiation?
It cannot be seen by the naked eye
It has a greater frequency
It has a larger wavelength
What could be used as a detector of infra-red radiation?
A parabolic reflector