| A | B |
|---|
| Light is a kind of | electromagnetic energy |
| Light has properties of | waves and particles |
| The distance between two crests of a wave | Wavelength |
| The height of a wave | Amplitude |
| Unlike sound, light can travel in | vaccuum |
| Speed of light | 186,000 miles per second |
| When light travels through matter, | it slows down |
| Tiny bundles of energy that light travels in | Photons |
| Radiowaves, Microwaves, Infrared light | Wavelengths higher than red |
| Ultraviolet light, x-rays, gamma rays | Light with wavelenght lower than violet |
| Part of the upper atmosphere protects earth from Sun's UV rays | Ozone layer |
| UV light produces this in the body | Vitamin D |
| This light can cause skin cancer and sunburn | UV light |
| Microwaves and X-rays are part of | Electromagnetic spectrum |
| Not a part of the electromagnetic spectrum | Sound |
| To pass through | Transmit |
| Splitting of light into its components | Dispersion |
| Angle at which light strikes a surface | Angle of incidence |
| Angle at which light bounces off a surface | Angle of reflection |
| Angle at which light is bent | Angle of refraction |
