SCHOLARSHIP SCIENCE 9 WAVE BEHAVIOR WEB ASSIGNMENT
Name:
Class Period:
Instructions:
A) Provide answers to questions marked with an *.
Section 1- Properties of waves
http://www.physicsclassroom.com/Class/waves/u10l1c.cfm
*1) What is a transverse wave?
http://www.physicsclassroom.com/mmedia/waves/em.cfm
*2) How are electromagnetic waves different from mechanical waves?
*3) How are electromagnetic waves created?
*4) What are the two components of an electromagentic wave?
*5) When electromagnetic waves are moving through a medium, which part of the atoms of the medium
absorb energy, vibrate and produce new waves of the same frequency?
http://id.mind.net/~zona/mstm/physics/waves/introduction/introductionWaves.html
*6) What is the amplitude of a wave?
*7) What is the wavelength of a wave?
8) Log onto the online textbook at www.physicsplace.com .
9) On the left side of the page find and click on “Interactive Figures”.
10) Go to 12.05 Wave velocity, wavelength and frequency.
*11) What happens to the frequency when the wavelength is shorter?
*12) What happens to the frequency when the wavelength is longer?
*13) What happens to the frequency when wave velocity is increased?
*14) What happens to the frequency when wave velocity is decreased?
Section 2- Reflection
15) Log onto the online textbook at www.physicsplace.com .
16) On the left side of the page find and click on “Interactive Figures”.
17) Go to 13.10 The Law of Reflection.
*18) An angle of incidence of 45° means the incident (incoming) angle is 45° from______________________.
*19) When the angle of incidence is 45° the angle of reflection is ________ from ______________________.
Put the pointer on the laser and change the angle of incidence to 60°.
*20 ) When the angle of incidence is 60° the angle of relection is ____________.
Put the pointer on the laser and change the angle of incidence to 17°.
*21) When the angle of incidence is 17° the angle of reflection is ____________.
http://www.scienceworld.ca/flash_games/laser.html
*22) What incident angle is needed to direct the laser beam to
III
on the screen?
23) Play the game if you have time. Try to hit the target.
--------------------------------------------------------------------------------------------------Section 3- Refraction
http://www.ps.missouri.edu/rickspage/refract/refraction.html
*24) What two things happen when light passes from one transparent medium to another?
25) Log onto the online textbook at www.physicsplace.com .
26) On the left side of the page find and click on “Interactive Figures”.
27) Go to 13.19 Refraction.
28) Click the switch in the upper left corner of the figure to turn the labels on.
29) Put the pointer on the laser and move the incident ray until the angle of incidence is 0°.
*30) When the angle of incidence is 0° what is the angle of refraction? ____________________________
31) Set the angle of incidence to 20°
*32) When the angle of incidence is 20° what is the angle of refraction? _______________________________
33) Set the angle of incidence to 70°
*34) When the angle of incidence is 70° what is the angle of refraction? _______________________________
35) Why are the angles of incidence and refraction not equal unless the angle of incidence is 0°?
http://www.ps.missouri.edu/rickspage/refract/refraction.html
36) Go to the refraction simulator. Set the bottom medium as vacuum and the angle as close to zero as
possible.
37) Observe the differences in refraction for vacuum, air, water, glass and diamond.
*38) Is there a significant bending of light when hitting a different surface almost straight on?
39) Go to the refraction simulator again. Set the bottom medium as vacuum and the angle between 35 and 45
degrees. Observe the differences in refraction for vacuum, air, water, glass and diamond.
*40) Which substance caused the greatest refraction of the light passing through it?
*41) Which substance tested has the largest index of refraction?
--------------------------------------------------------------------------------------------------Section 4- Diffraction
Diffraction is bending of waves around small obstacles and causes the spreading out of waves after they move
through small openings.
Changing wavelength and aperture size
http://micro.magnet.fsu.edu/primer/java/diffraction/basicdiffraction/index.html
42) Change the size of the aperture.
*43) Do smaller or larger apertures cause waves to bend more?
44) Change the wavelength of the wave passing through the aperture.
*45) Do all wavelengths of light bend at the same angle?
*46) Which wavelengths tend to bend the most?
--------------------------------------------------------------------------------------------------Section 5- Wave interference
47) Go to the Wave Interference Powerpoint on the class webpage.
48) Start the PowerPoint presentation
*49) When does the new wave formed have the highest amplitude?
*50) When do the two waves cancel each other out?
*51) How can you tell if destructive interference is taking place between the two waves?
*52) How can you tell if constructive interference is taking place between the two waves?
http://www.colorado.edu/physics/2000/schroedinger/
53) Go to the “Interfering Waves” section and watch the movie. Look for the bands that indicate destructive
interference.
--------------------------------------------------------------------------------------------------Section 6- Polarized and unpolarized light
54) Go to the Polarized Light Powerpoint on the class webpage.
55) Start the PowerPoint presentation.
*56) What is unpolarized light?
*57) How does a polarizing filter work?
http://micro.magnet.fsu.edu/primer/java/polarizedlight/3dpolarized/index.html
58) Test different polarizer alignments.
*59) Which alignments allow the most light to pass through?
*60) Which alignments allow the least light to pass through?
Section 7- Doppler Effect
61) Log onto the online textbook at www.physicsplace.com .
62) On the left side of the page find and click on “Interactive Figures”.
63) Go to 12.27 The Doppler Effect and the Source’s Speed.
64) Click on the PLAY button.
*65) On the chart below, record the wavelength and frequency of the sound wave reaching the observer when
the helicopter is stationary.
66) Increase the speed of the helicopter towards the observer. Click on the PLAY button.
*67) On the chart below, record the speed, wavelength and frequency of the sound wave reaching the observer
when the helicopter is moving towards the observer.
68) Increase the speed of the helicopter away from the observer. Click on the PLAY button.
*69) On the chart below, record the speed, wavelength and frequency of the sound wave reaching the observer
when the helicopter is moving from the observer.
Helicopter is stationary
Helicopter moving towards observer
Helicopter moving from observer
Speed Wavelength Frequency
0 m/s
70) Log onto the online textbook at www.physicsplace.com .
71) On the left side of the page find and click on “Interactive Figures”.
72) Go to 12.28 Hearing the Doppler Effect as a Car Passes.
73) Click on the PLAY button.
*74) What happens to the frequency of the sound waves reaching the observer as the car moves closer?
*75) What happens to the frequency of the sound waves reaching the observer as the car moves away?
http://archive.ncsa.uiuc.edu/Cyberia/Bima/doppler.html
*76) What would cause electromagnetic radiation to be blueshifted as it moves towards you?
*77) What would cause electromagnetic radiation to be redshifted as it moves away from you?
Section 8- Duality of light
http://webs.morningside.edu/slaven/Physics/uncertainty/uncertainty2.html
*78) What behavior of light was discovered that shows light behaves as a wave?
*79) What behavior of light was discovered that shows light behaves as a particle?