| 
  • If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Stop wasting time looking for files and revisions! Dokkio, a new product from the PBworks team, integrates and organizes your Drive, Dropbox, Box, Slack and Gmail files. Sign up for free.

View
 

Waves

Page history last edited by Susan Jazwiec 6 years, 4 months ago

 

 

 

 

 

 

 

 

 

 

Waves 

 

All waves have amplitude, wavelength, and frequency.

 

Sound Waves

 http://jazwiec.pbworks.com/w/page/7633916/Sound

 

Light waves Choose "Run Now"

http://phet.colorado.edu/sims/geometric-optics/geometric-optics_en.html 

 

Wave on a String 

http://phet.colorado.edu/sims/wave-on-a-string/wave-on-a-string_en.html

 

Stationary Wave

http://www2.biglobe.ne.jp/~norimari/science/JavaEd/e-wave4.html

 

Standing Waves

 

 

Assignments: 

1. Place 10 mirrors changing the direction of light 

http://www.bbc.co.uk/schools/scienceclips/ages/10_11/see_things.shtml 

Take a screen shot, save in Paint name the file "Activity How we see things"

 

Quiz

2. Take the quiz

http://www.bbc.co.uk/schools/scienceclips/ages/10_11/see_things.shtml

when you have 10/10 take a screen shot and save in Paint name the file "Quiz How we see things"

 

 3. 

Open Audacity (free open source program). Record this paragraph. Your recording should be about 30 seconds long.

A wave is a distortion in a material or medium, where the individual parts of the material only show periodic motion, while the waveform itself moves through the material. All waves have similar characteristics, and since all forms of wave motion follow the same laws and principles, knowing the fundamentals of wave motion is important in understanding sound, light, and other types of waves.

 

Now mute that line and record this: Your recording should be about 30 seconds long.

Wave motion is defined as the movement of a distortion of a material or medium, where the individual parts or elements of the material only move back-and-forth, up-and-down, or in a cyclical pattern.

It appears as if something is actually moving along the material, but in reality it is just the distortion moving, where one part influences the next.

This sounds somewhat abstract, but it can be visualized with examples.

 

Now mute that line and record this: Your recording should be about 30 seconds long.

The characteristics of a waveform are wavelength, amplitude, velocity, and frequency. All periodic waveforms have these common characteristics.

There are special cases, where only one crest of the wave is seen, like the the wave at a ballgame or the sound caused by an impact or explosion. In those cases, there is still a wavelength, but there is no frequency, since the waveform is not periodic.

 

I want you to experiment with these 3 lines. Go to effects: Amplify, Change Pitch, Change Speed, Change tempo. Write what you observe.

Use this chart.

 

audacity project3.xlsx  

 

tumblr visitor

Comments (0)

You don't have permission to comment on this page.