| A | B |
|---|
| energy | ability to cause a change in matter |
| transverse | light is this type of wave |
| ray | straight path that a light wave travels in |
| beam | group of parallel waves |
| photon | small light particle |
| reflect | bounces off |
| refraction | the bending of light |
| transmit | pass through |
| absorb | become heat |
| transparent object | transmits most light |
| translucent object | transmits only some light |
| opaque object | transmits no light |
| mirrors | surfaces that reflect all light |
| concave | curved inward |
| convex | curved outward |
| convex mirror | makes reflected objects appear smaller |
| concave mirror | makes reflected objects appear larger |
| velocity of the light | refraction is caused by a change in this |
| medium | the object the light travels in |
| rainbow | example of both reflection and refraction |
| lenses | curved pieces of transparent materials |
| concave lenses | refraction makes objects appear smaller |
| convex lenses | refraction makes objects appear larger |
| wavelength | distance between a point on a wave to the same point on the next wave |
| frequency | number of waves passing a given point every second |
| high | waves with this type of frequency have more energy |
| low | waves with this type of frequency have less energy |
| visible spectrum | wavelengths of light detectible by the human eye |
| prism | used to refract and disperse light |
| violet | the color of the wavelength that bends the most when refracted |
| red | the color of the wavelength bends the least |
| dispersion | separation of light |
| black | the color we see when all visible light is absorbed |
| white | the color we see when all visible light is reflected |
| electromagnetic spectrum | band of energy waves that includes visible light that all vibrate at different frequencies |
| radio waves | part of the electromagnetic spectrum with the longest wavelength and least amount of energy |
| gamma waves | part of the electromagnetic spectrum with the shortest wavelength and the most energy |
| infrared waves | create the warmth you feel from the sun |
| x-ray waves | used to look at your bones |
| microwaves | used in navigation and cooking |
| ultraviolet waves | cause skin cancer |
| Galileo | refracting telescope |
| Robert Hooke | compound microscope |
| Leeuwenhoek | simple microscope |
| Isaac Newton | reflecting telescope |
