grade 10 scince component 4C Q1 which wave types of the electromagnetic have the longest wavelength?
Answer (1)
The radio waves have the longest wavelength in the electromagnetic (EM) spectrum.The electromagnetic spectrum is the range of all types of electromagnetic radiation. These waves differ in wavelength and frequency. The longer the wavelength, the lower the frequency and energy.Summary of the Electromagnetic SpectrumRadio waves – Longest wavelength, used in radios, TVs, cellphones.Microwaves – Used in cooking and radar.Infrared – Felt as heat.Visible light – The only part humans can see.Ultraviolet – Causes sunburn; used in sterilization.X-rays – Used in medical imaging.Gamma rays – Shortest wavelength, highest energy; used in cancer treatment.Radio waves can have wavelengths longer than a football field (up to kilometers long), while gamma rays are smaller than atoms. Because of their low energy, radio waves are safe for communication devices.
