1 / 8

The Plan… 15 April 2013

The Plan… 15 April 2013. New Seating Plan with “special” rules… Review 4.3 Light & Electromagnetic Spectrum I could have done a better job at this… Review outstanding Homework: CYU P. 143 & Worksheet 4.2 CYU P. 151 & Worksheet 4.3 NEW today… and for possible Homework CYU P. 163 #1-12

urvi
Télécharger la présentation

The Plan… 15 April 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Plan…15 April 2013 • New Seating Plan with “special” rules… • Review 4.3 Light & Electromagnetic Spectrum • I could have done a better job at this… • Review outstanding Homework: • CYU P. 143 & Worksheet 4.2 • CYU P. 151 & Worksheet 4.3 • NEW today… and for possible Homework • CYU P. 163 #1-12 • Tomorrow: Activity 4.9 • Remember Ch 3 Re-Tests start today! • Ch 4 Test THURSDAY! • I made a webpage!

  2. The Electromagnetic Spectrum • The Electromagnetic Spectrum contains a variety of energy transmissions found at differing wavelengths and frequencies. • Visible Light is found within the spectrum, with it being the only transmission visible to the human eye.

  3. The Parts of the Spectrum • Radio Waves: • Have the longest wavelength and the lowest frequency. • Used to transmit Radio & TV Signals as well as in MRI technology. • Microwaves: • While a “wave” of their own, microwaves are found within the Radio and Infrared Spectrum. • Microwaves have the have the shortest wavelength and highest frequency of the Radio waves. • Used in cooking food, telecommunications, and radar – specifically in tracking objects and forecasting weather. • Microwaves cause water particles in food to vibrate = heat. Bounce back of off items in regards to radar/doppler.

  4. The Spectrum Continues • Infrared Waves • Just on the outside of Microwaves, infrared waves are a heat producing wave. • Found in TV remotes, infrared cameras, and CD-ROM readers. • Next on the Spectrum is Visible Light • This includes ROY G BIV • This is the only part of the spectrum that we can see with our eyes

  5. Shorter wavelengths = more energy • Wavelengths that are shorter than visible light produce more energy • Next on the list is Ultraviolet Waves (UV) • This radiation is found in Sunlight • UV hitting your skin enables it to produce Vitamin D • Too much exposure can = cancer • Sunscreen can protect you from harmful UV radiation

  6. The end of the Spectrum • X-Rays • Shorter wavelength and higher frequency & energy output than UV Radiation. • Used to photograph teeth & bones • Gamma Rays • They are the result of a nuclear reaction • Used in radiation therapy to help kill cancer cells

  7. How you can remember the Spectrum • Radio • Microwave • Infrared Wave • Visible Light • Ultraviolet Waves • X Rays • Gamma Rays R M I V U X G

  8. Now its your turn to Review… • Worksheet 4.3 • CYU P. 163 #1-12 • For Tomorrow • Finish Activity 4.7 from Friday • Start to review for test(s) • Retests today • Ch 4 on Thursday • Webpage in a bit… • www.hillscience8.wikispaces.com

More Related