The electromagnetic spectrum consists of 7 different types of light waves.

-Radio Waves

-Microwaves

-Infrared

-Visible Light

-Ultraviolet

-X Rays

-Gamma Rays

The longest wavelengths

Lowest frequency

Lowest energy

Carries signals to radios and televisions

AM: Amplitude Modulation (Longest Wavelength) Bounces off Ionosphere

FM: Frequency Modulation

Higher frequency than radio waves.

Higher energy than radio waves.

Smaller wavelength than radio waves

Used for radars, cell phones

Used to heat up food.

Has energy that is just below visible light.

“Infra” means below

Given off by stars, lamps, fire, etc.

You can feel infrared radiation as warmth on your skin.

Used for remote controls.

The only part of the EM spectrum that we can see.

Contains seven different colors. Red Orange Yellow Green Blue Indigo Violet

Found after violet in visible light.

Effective in killing bacteria and viruses

Found after violet in visible light.

Overexposure can cause skin cancer and sunburn.

Can kill plants if they are overexposed also.

Sunblock protects your skin from harmful UV rays.

Used in hospitals to find complications in bones.

Soft body tissue is transparent to the waves.

Bones block the rays.

Overexposure to x-rays can cause cancer.

Can also cause the reduction of blood.

Used to treat certain cancers and tumors.

Could also cause cancers as a disadvantage.

Detects brain and cardiovascular abnormalities.

Used to kill pesticides and bugs.

http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html

http://science.hq.nasa.gov/kids/imagers/teachersite/UL3waves.htm

http://www.darvill.clara.net/emag/emaginfra.htm

http://www.stmary.ws/highschool/physics/uv_1.htm