Transcript Infrared
Infrared Electromagnetic Spectrum • E.Q. Describe how the electromagnetic spectrum is organized. • Spectrum? It’s a scale used to put things in order. We will organize radiation. • Radiation – There are 7 types and they all move the speed of light. 1. Radio Waves • Comes from anything with a magnetic field such as Earth, nebulas, and galaxies. • Used for communication through old fashioned TV or music from the radio. • The waves are about a football field apart from each other. 2. Microwaves • Used for communication and cooking. • Cell phones, wifi, and radar use microwaves. • Waves are a “butterfly” apart from each other. 3. Infrared • Given by heated objects. • Used to see heat or cold. • For example: Bigfoot hunters and Ghost hunters use infrared cameras to see heat or absence of heat. • Size: needle point 4. Visible Light • Radiation humans can see. • Rainbow – Red, Orange, Yellow, Green, Blue, Indigo, Violet. • Roy G. Biv • Size: protozoa 5. Ultraviolet • • • • Comes from Sun Causes sunburn and skin cancer Tanning beds use ultraviolet light with no heat Size: molecule 6. X-rays • Come from blackholes, supernovas, neutron stars, Sun, some comets. • Used to see bones and teeth • Size: atom 7. Gamma Rays • Come from the radioactive decay of atomic nuclei. • Occurs in supernova, neutron star, and areas around blackholes. • Size: nucleus of an atom. Use ruler to draw 2 lines Draw waves from long to short Label the left Put visible light in the center Glue colored strips Draw lines to insert rainbow in the spectrum Label all types of radiation Insert the measurements Draw and color a symbol or diagram for each type of radiation