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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?
http://www.classzone.com/books/ml_science_share/vis_sim/wslm05_pg18_graph/wslm05_pg18_graph.html
8) Set the amplitude to the lowest setting (far left),
9) Make a wave with the lowest frequency setting. Observe the wavelength of the wave formed.
10) Make a wave with the highest frequency setting. Observe the wavelength of the wave formed.
*11) What happens to the wavelength when frequency is increased?
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Section 2- Reflection
http://micro.magnet.fsu.edu/primer/java/reflection/reflectionangles/index.html
*12) What is the relationship between the incident (incoming) angle of light and the reflected angle of light?
*13) Does changing the wavelength of the reflected light change the relationship between the incident angle and the reflected angle?

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Section 3- Refraction
http://www.ps.missouri.edu/rickspage/refract/refraction.html
*14) What two things happen when light passes from one transparent medium to another?
15) Go to the refraction simulator. Set the bottom medium as air and the angle between 35 and 45 degrees. Observe the differences in refraction for vacuum, air, water, glass and diamond.
*16) Which substance caused the greatest refraction of the light passing through it?
*17) Which substance tested has the largest index of refraction?

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Section 4- Diffraction
Diffraction is bending of waves around small obstacles and causes the spreading out of waves after they move through small openings.
Diffraction- changing wavelength and aperture size

http://micro.magnet.fsu.edu/primer/java/diffraction/basicdiffraction/index.html

18) Change the size of the aperture.

*19) Do smaller or larger apertures cause waves to bend more?


20) Change the wavelength of the wave passing through the aperture.

*21) Do all wavelengths of light bend at the same angle?

*22) Which wavelengths tend to bend the most?

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Section 5- Wave interference

Go to the Wave Interference Powerpoint on the class webpage.


*23) When does the new wave formed have the highest amplitude?
*24) When do the two waves cancel each other out?
*25) How can you tell if destructive interference is taking place between the two waves?
*26) How can you tell if constructive interference is taking place between the two waves?
http://www.colorado.edu/physics/2000/schroedinger/
27) Go to the “Interfering Waves” section and watch the movie. Look for the bands that indicate destructive interference.

Section 6- Polarized and unpolarized light



Go to the Polarized Light Powerpoint on the class webpage.
*28) What is unpolarized light?
*29) How does a polarizing filter work?
http://micro.magnet.fsu.edu/primer/java/polarizedlight/3dpolarized/index.html
30) Test different polarizer alignments.
*31) Which alignments allow the most light to pass through?
*32) Which alignments allow the least light to pass through?
Section 7- Doppler Effect

http://www.kettering.edu/~drussell/Demos/doppler/doppler.html

*33) What causes the shift in frequency and wavelength of waves known as the Doppler Effect?
http://archive.ncsa.uiuc.edu/Cyberia/Bima/doppler.html

*34) What would cause electromagnetic radiation to be blueshifted as it moves towards you?


*35) What would cause electromagnetic radiation to be redshifted as it moves away from you?


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