(Mon) The Electromagnetic Spectrum has 7 major groups based on the EM wave’s frequency. What are the 7 major groups in the EM Spectrum? (5 min / 7 pts)

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Presentation transcript:

(Mon) The Electromagnetic Spectrum has 7 major groups based on the EM wave’s frequency. What are the 7 major groups in the EM Spectrum? (5 min / 7 pts)

Microwaves (Mon) The Electromagnetic Spectrum has 7 major groups based on the EM wave’s frequency. What are the 7 major groups in the EM Spectrum? (5 min/7 pts) Radio Waves Infrared Visible Light Ultraviolet X-Rays Gamma Rays

(Tue) A radio wave moves at the speed of light in a vacuum. If you are tuned into MHz (103,500,000 Hz) what is the wavelength for this radio wave? (5 min / 6 pts)

300,000,000 m/s = (103,500,000 Hz)( λ ) v = f x λ V f λ ∕ = λ = (300,000,000 m/s)/(103,500,000 1/s) λ = m 3x10 8 m/s 1.035x10 8 Hz

(Wed) Diffraction is another wave interaction. What are two things that diffraction causes, and when does diffraction not happen? (5 min / 6 pts)

Diffraction causes: Waves to bend around an obstacle Waves to spread out when they pass through a small opening Diffraction does not happen when: The wavelength is small compared to the size of the object

(Thu) What is the difference between Diffraction, Refraction and Reflection of light waves? (5 min / 6 pts)

RefractionDiffractionReflection The bending of light waves as they pass around an object or through a slit (no media change) The bending of light waves as they pass through a change in media The bending of light waves as they bounce off the surface of a media

(Fri) What is the formula for the Index of Refraction? Which will have a larger Angle of Refraction: a diamond with an Index of Refraction of or Pyrex glass that has an Index of Refraction of 1.474? (5 min / 6 pts)

n = (Fri) What is the formula for the Index of Refraction? Which will have a larger Angle of Refraction: a diamond with an Index of Refraction of or Pyrex glass that has an Index of Refraction of 1.474? (5 min/6 pts) speed in light in a vacuum speed in material Formula: Larger Angle of Refraction: Pyrex Glass

End of Week Procedures 1.Add up all the points you got this week 2.Put the total number of points out of 31 points you earned at the top of your page (no total, lose 5 points) 3.List any dates you were absent or tardy (and why) 4.Make sure your name and period # is on the top of the page (no name, no credit) 5.Turn in your papers