https://www.youtube.com/watch?v=cfXzwh3KadE Unit C Pages 73-99 Light Vocabulary https://www.youtube.com/watch?v=cfXzwh3KadE Unit C Pages 73-99

The part of the EM spectrum that the human eye can see. Visible Light (84, C)

An electromagnetic wave is a disturbance that transfers energy through a field. EM Wave (73, C)

A tool that uses refraction to separate the different wavelengths that make up white light. Prism (97, C)

Primary Colors (98, C) (Red, Green, and Blue) Three colors of light, which can be mixed to produce all possible colors. When all three are mixed together equally, they appear white or colorless. Primary Colors (98, C) (Red, Green, and Blue)

EM frequencies between microwaves and visible light EM frequencies between microwaves and visible light. It is often associated with heat/cooking. Example: in a toaster Infrared Light (84, C)

EM waves with shorter wavelengths, higher frequencies, and higher energy then other radio waves. These waves are used in cell phones. Microwaves (83, C)

The electromagnetic spectrum is a gradual progression from the lowest frequencies (radio waves), to the highest (gamma rays). EM Spectrum (80, C)

EM waves that have the longest wavelengths, the lowest frequencies, and the lowest energies. These waves broadcast TV. Radio Waves (82, C)

X-rays pass easily through the soft tissues of the body, but many are filtered out by denser matter such as bone. X-Rays (86, C)

The passage of an EM wave through the medium (any object a wave goes through). Transmission (93, C)

The disappearance of an EM wave into the medium (any object a wave goes through). Absorption (93, C)

Ultraviolet or UV Light (85, C) Part of the EM spectrum consists of frequencies above those of visible light and below those of x-rays. They can damage tissue, skin, and your eyes. Ultraviolet or UV Light (85, C)

Spreading out of light rays in all directions, because particles reflect and absorb light. Scattering (95, C)

The production of light by materials at high temperatures The production of light by materials at high temperatures. When a material gets hot enough, it gives off light by glowing or bursting into flames. Incandescence (89, C)

The production of light by living organisms The production of light by living organisms. These organisms produce light from chemical reactions rather than intense heat. Bioluminescence (89, C)

Have the highest frequencies and energies of any EM waves Have the highest frequencies and energies of any EM waves. Produced by radioactive substances as well by the Sun and other stars. Gamma Rays