Electromagnetic Spectrum and Radiation

Front

What determines the order of the electromagnetic spectrum?

Back

The electromagnetic spectrum is arranged based on the wavelengths or frequencies of the radiation in each region.

Front

What is the relationship between wavelength and frequency in the electromagnetic spectrum?

Back

Regions with a long wavelength have a low frequency and vice versa.

Front

What is the speed of all electromagnetic waves in a vacuum?

Back

All electromagnetic waves travel at the same high speed in a vacuum, c = 3 X 10^8 m/s.

Front

What are the effects of excessive exposure to electromagnetic radiation?

Back

Excessive exposure to electromagnetic radiation has harmful effects on people.

Front

How does the frequency of electromagnetic waves relate to their energy?

Back

As the frequency of the electromagnetic (EM) waves increases, so does their energy.

Front

What happens beyond the visible part of the spectrum?

Back

Beyond the visible part of the spectrum (ultraviolet waves, X-rays, and gamma rays), the energy is large enough to ionise atoms.

Front

What is the relationship between frequency and ionising radiation?

Back

The higher the frequency, the more ionising the radiation.

Front

What factors affect the effects of ionisation?

Back

The effects of ionisation depend on the type of radiation and the size of the dose.