| A | B |
|---|
| Electromagnetic Waves | Transverse waves that transfer electrical and magnetic energy. |
| Electromagnetic Radiation | The energy transferred by electromagnetic waves. |
| Radar | A system of detecting radio waves. |
| Visible Light | The electromagnetic waves that are visible to the human eye. |
| Radio Waves | The electromagnetic waves with the longest wavelengths and lowest frequencies. |
| Microwaves | Radio waves with the shortest wavelengths and the highest frequencies |
| Infrared Rays | Electromagnetic waves with higher frequencies and shorter wavelengths than radio waves. |
| Ultraviolet Waves | Electromagnetic waves with frequencies higher than visible light, but lower than X-Rays. |
| X-Rays | Electromagnetic waves with higher frequencies than ultraviolet rays, but shorter than gamma rays. |
| Gamma Rays | Electromagnetic waves with the shortest wavelengths and the highest frequencies. |
| Incandescent Lights | Lights that glow when something inside them gets hot.. |
| Fluorescent Lights | Lights that glow when an electric current causes ultraviolet waves strike a coating inside a tube. |
| Reflection | The bouncing back of a wave when it hits a surface through which it cannot pass. |
| Refraction | The bending of waves as they enter a different medium. |
| Transparent | A material that transmits light. |
| Translucent | A material that scatters light as it passes through. |
| Opaque | A material that reflects or absorbs all light that strikes it. |
| Regular Reflection | Reflection that occurs when parallel rays of light hit a smooth surface and all reflect at the same angle. |
| Diffuse Reflection | Reflection that occurs when parallel rays of light hit a rough surface and all reflect at different angles. |
| Concave Mirror | A mirror with a surface that curves inward. |
| Convex Mirror | A mirror with a surface that curves outward. |
| Plane Mirror | A flat mirror that produces an upright, virtual image the same size as the object. |
| Convex Lenses | A lens that is thicker in the center than at the edges. |
| Concave Lenses | A lens that is thinner in the center than at the edges. |
