| A | B |
|---|
| Electromagnetic wave | Transverse waves that transfer electric and magnetic energy. |
| Electromagnetic radiation | The energy transferred by electromagnetic waves. |
| Electromagnetic spectrum | The range of electromagneticwaves placed in order of frequency or energy |
| Photon | A tiny particle or packet of light energy. |
| Radio waves | Electromagnetic waves with the longest wavelengths and lowest frequencies. |
| Microwaves | Radio waves with the shortest wavelengths and the highest frequencies. |
| Radar | A system of detecting reflected radio waves. |
| Infrared Rays | Electromagnetic waves with higher frequencies and shorter wavelengths than radio waves. |
| Visible Light | Electromagnetic waves that are visible to the human eye. |
| Ultraviolet Rays | Electromagnetic waves with frequencies higher than visible light ,but lower than X-rays. |
| X-ray | Electromagnetic waves with higher frequencies than ultraviolet rays , but shorter than gamma rays. |
| Gamma Ray | Electromagnetic waves with the shortest wavelength and highest frequencies. |
| Absorption | When an object absorbs the light and transfers it to heat energy |
| Scattering | when light strikes a small particle of matter such as in a cloud the light can be scattered in all directions |
| Reflection | Is the principle phenominon at work in mirrors. In reflection the angles of the incoming and the outgoing rays are the same. |
| Refraction | Bending of light wave when light passes from one medium to another. |
