1) Diffraction is a) the bending of waves around an obstacle b) the change of direction as wave pass into a material of different density c) the bouncing of a wave off a surface 2) Which of these waves will diffract most a) radio waves b) microwaves c) infrared d) UV e) Xrays f) Gamma rays 3) diffraction occurs when a) waves pass through a gap or around an object b) waves split into two groups c) waves pass into a material of different material d) waves bounce off a surface 4) What best describes which waves diffract? a) Transverse waves only b) Longitudinal waves only c) Electromagnetic waves only d) All Waves 5) What size gap would you expect to produce the most diffraction? a) same gap width as 2 wavelengths b) same gap width as one wavelength c) same gap width as 3 wavelengths d) same gap width as 4 wavelengths 6) How will these waves diffract through this gap? a) A b) B c) C 7) How will these waves diffract through this gap? a) A b) B c) C d) D 8) Which type of waves will be most likely to be detected by the house? (Choose all that apply) a) Low frequency b) High frequency c) Long wavelength d) short wavelength e) high speed waves f) low speed waves

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