Electromagnetic Waves HaveMany Uses
McDougal Littel Unit D Chapter 3 Section 2
Pages 79-86
If you are absent today click on the followinglink to read about the EM Spectrum before youcome back to class.
Groups
1.EM waves have different frequencies. Pg. 79
2.The Electromagnetic Spectrum pg.80
3.Measuring EM Waves pg. 81
4.Radio waves and microwaves have long wavelengthsand low frequencies. Pg. 82
5.Radio Waves pg. 82
6.Microwaves pg. 83
7.Infrared, visible, and ultraviolet light have mid-rangewavelengths and frequencies. Pg. 84
8.Infrared Light pgs. 84-85
9.Ultraviolet Light pg. 85
10.X-Rays and gamma rays have short wavelengths andhigh frequencies. Pg. 86
Group Project
•Each group must create a mini-poster about theirsection of reading.
•Each poster must contain the title of the sectionand the page numbers.
•Each poster must use key words andsymbols/pictures to summarize the readingsinformation.
•Each poster must have the group membersnames on the back.
•Each poster must be easy to read from across theroom.
Gamma RaysHave the shortest wavelength The highest frequency and radiate the most energy.Radioactive materials emit gamma rays.
Study Guide Requirement
•One person from each group needs to see mefor information that must be included on theback of their poster.
•This will be information that we will use to fill-in a study guide.
Groups Will Present Their Posters
•Make sure to decide how to present yourposter.
•Chose 1-2 sentences from your reading thatyou feel are the main ideas.
•Make a note of the page, paragraph and linenumbers.
•You will have the class read those sentencesout loud before you present your poster.