# Lesson: Electromagnetic Spectrum and Parts of Waves

David Kujawski Bird Middle East Walpole, MA
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### Lesson Objective

YWBAT: 1) Identify the parts of transverse waves 2) Explain the relationship between wavelength and wave frequency 3) Apply your understanding of frequency to explain the organization of the EM Spectrum

### Lesson Plan

This lesson can be used in conjunction with the EM Spectrum Webquest that I have on BL.

1) DO NOW: Ask students what they already know about waves.  Share responses with class.  (4 minutes)

2) Instruct students to take notes on parts of wave. (6-10 minutes)

3) Show Brainpop video on waves

4) Have students define frequency as the number of waves that pass a certain point in one second.

5) Have students draw a high frequency wave and then a low frequency wave on the bottom of worksheet.  Circulate to make sure that they understand that shorter wavelengths=higher freqency and longer wavelengths=low frequency.

6) Model frequency by having students line up 2 feet apart and see how many can pass a point in a certain amount of time.  Then have students stand 5 feet apart and have them count how many people pass a point in a certain time.  Discuss why more students were able to pass when they only 2 feet apart compared to 5 feet.  Relate this to energy, wavelength and frequency.

7) Have students complete the visible light activity on the back of page one on worksheet, review as class.

7a) Optional: Show Brainpop video on color.

8) Have students complete the second worksheet on EM Spectrum, review.

9) As class discuss how the EM spectrum is relevent to their lives.

### Lesson Resources

 EM spectrum and WAVES worksheet CW.doc   Classwork 5,761