| A | B |
|---|
| Wave | a disturbance that transfers energy from place to place |
| Energy | the ability to do work |
| Medium | A material through which a wave can travel |
| Transverse Wave | Where particles moves perpendicular to the direction of the wave |
| Longitudinal Wave | Where particles moves parallel to the direction of the wave |
| Surface Waves | Where particles move in a circular motion to create a wave |
| Wavelength | The distance between two corresponding wave parts - crest to crest or trough to trough |
| Frequency | Number of complete waves that pass a given point in a certain amount of time |
| Crest | The top of a wave |
| Trough | The bottom of a wave |
| Amplitude | The height of the wave from the rest. |
| Hertz (Hz) | The unit for frequency |
| Electromagnetic spectrum | Transverse waves that have electrical and magnetic properties. Includes gamma, X, and microwaves. |
| Light | Something that makes vision possible |
| Ray | Light waves represented as straight lines |
| Polarized Lens | A device which filters a single direction of light rays/waves |
| Reflection | To bounce light off |
| Absorb | To take light in |
| Transmit | To allow light to go through |
| Refraction | To bend light |
| Opaque | A material that reflects or absorbs all of the light that strikes it |
| Transparent | An object that transmits light |
| Translucent | An object that scatters light as it passes through |
| Regular Reflection | Reflecton when parallel rays of light hit a smooth surface |
| Diffuse Reflection | Reflection when parallel rays hit a bumpy or uneven surface |
| Index of Refraction | A specific number representing how much light bends when it enters a specific medium |
| White Light | The part of the electromagnetic spectrum we are able to see |
| Prism | An object which bends white light, allowing us to see all colors |
| Roy G. Biv | The colors of the rainbow in order from low frequency to high frequency |
| Cornea | The transparent front surface of the eye. |
| Iris | The colored part of the eye. |
| Pupil | The hole in the eye which allows light in |
| Lens | A tissue directly behind the pupil which perfects the image by refracting the light |
| Retina | A layer of cells along the inside lining of the eye |
| Convex | A lens thicker in the middle and focuses the light to one point. |
| Concave | A lens which is thinner in the middle and makes the light spread out |
| Sound | Waves caused by vibrations that we "hear" |
| Decibels (dB) | A measurment of loudness |
| Pitch | How high or low a sound is |
| Compression | Occurs to waves during the doppler effect. |
| Resonance | WHen two objects naturally vibrate at the same frequency |
