EM SpectrumWednesday, February 25, 2015

Unit 8: EM Spectrum/Optics Wednesday, 2/25

Pick up a warm-up sheet from the Physics bin. Draw the mind map below on your warm-up sheet. Think back to the article you

read after the test last week. Predict what will be drawn under the EM wave section.

Upcoming dates: Friday, 2/27 – EM Spectrum project due Thursday, 3/5 – Open note quiz Monday, 3/9 – Spring break starts Wednesday, 3/18 – tentative date for EM Spectrum/Optics test Thursday, 4/2 – 5SW extra credit due by 4:30 Friday, 4/10 – End of 5SW

Guiding Questions1. If electromagnetic waves don’t require a medium what is vibrating (causes

the disturbance)? (resource 1)

2. What do wavelength and frequency tell us about a wave? (resource 1)

3. There are seven regions in the EM spectrum. What is used to define the regions? What are the names of the regions? (resource 1 and 2)

4. Summarize key points about each region of the EM spectrum (resource 2).

5. How can you use a diagram to describe the various energy levels of the EM spectrum? (include a diagram of the EM spectrum in your response). (resource 2)

6. What velocity do EM waves travel? (resource 3)

Guiding Questions (Cont.)How can you use a diagram to describe the various energy levels of a EM wave? (include a diagram of the EM spectrum in your response). (resource 2)

Visible Light Spectrum

Practice Problems When you are finished with your

practice problems do the following: Show me your completed work. Check your answers.

EM Spectrum AssignmentDraw the EM Spectrum and include the following:

1. Draw the wavelength and frequencies of each EM wave to scale.

2. Label the 7 different EM waves.

3. List two facts you have learned about radio waves, microwaves, infrared waves, ultraviolet waves, x-rays, and gamma rays.

4. Diagram the visible light spectrum and describe how each of the waves in the spectrum are different.