Answer questions on electromagnetic spectrum Activity 1
Explain what is meant by electromagnetic spectrum.
2 Arrange ultraviolet radiation, radio waves, X-rays and visible light in
order of increasing frequency.
3. Arrange infrared radiation, gamma rays, microwaves and visible light in
order of increasing wavelength.
4
Calculate the:
41 frequency of an X-ray with a wavelength of 1 nm
42 wavelength of a radio wave with a frequency of 100 MHz.
5 Sunlight and welding arcs are sources of ultraviolet that can affect the
skin and eyes.
5.1 Why does ultraviolet radiation cause harm?
5.2 Suggest ways of protecting yourself against harmful radiation.
6 Why does the operator of an X-ray machine stand where she cannot
receive any radiation?​