| A | B |
|---|
| Refract | when light waves are bent; ex. a pencil in a glass of water looks bent when you look at it from the side |
| Reflect | when light waves bounce off of an object |
| Transmit | when light waves pass through an object |
| Light Energy | Energy in the form of moving electromagnetic waves |
| Electromagnetic Waves | a type of wave that does NOT needs a medium (matter) to travel through (ex. light, microwave, radio waves) |
| Absorb | to take in |
| Medium | Material through which a wave travels example: water, air, glass |
| Black Color | when all colors of light are absorbed by a material |
| White Color | This type of color that reflects all colors and absorbs none |
| How we see color | An object absorbs all colors of light except the one we see which it reflects |
| Rainbow | an arc of colored light in the sky caused by refraction of the sun's rays by rain |
| Why is the sky blue? | Because gas molecules in the atmosphere scatter blue light, which has the shortest wavelength. |
| Binary Code | Groupings of 1's and 0's that makes information that a computer can understand. |
| Analog Waves | continuous waves |
| Waves | a repeating movement or disturbance that transfers energy through matter or space. |
| Energy | All waves carry _____________without transporting matter from place to place. |
| Mechanical Waves | Waves that can only travel through a medium (solid, liquid, or gas) ex sound waves |
| Crest | the highest point on a wave |
| Wavelength | distance between one point on wave and similar point nearest to it |
| Frequency | number of wavelengths that pass a fixed point each second (hertz - Hz) |
| Amplitude | the height of the wave (a measure of energy in a wave; the more energy a wave carries) |
| Trough | lowest part of a wave |
| The greater the frequency the higher the ______________. | pitch |
| The greater the amplitude the higher the _____________. | volume |
| Transverse Wave | the transfer of energy in a motion that is perpendicular to the direction the wave is traveling |
| Longitudinal Wave | waves where the disturbance moves in the same direction as the wave |
