1011+Waveapplet

On this page, you will create a link to your wave applet and post the instructions for using the applet.

Your goal is to teach another student a simple fact about waves. To reach this goal, you will create a simple series of instructions. You will also guide the student to observe what you are trying to teach them.

Please create a link from your name to the applet page. The applet should open in its own window. Please also write instructions in the box next to your name, as shown in the sample. Only one person can edit the page, so you MUST TAKE TURNS. Your instructions should be ready to type BEFORE you begin editing the page. You can wait until you are at home to post. Mr. Robinson will check the page on Monday. Everyone except Isaac should have posted some instructions by then.

CAUTION: These instructions are a rough draft. They do not need to be complete in all their details. However, you should have identified the goal you are trying to reach and thought about the general steps that must be followed to reach it.


 * ~ ===Link to the applet created by=== ||~ ===Instructions for using the applet=== ||
 * a student named "SAMPLE" || # open the applet
 * 1) change this setting
 * 2) watch what happens
 * 3) change the other setting
 * 4) watch what happens
 * 5) you saw a change in frequency; in your own words, describe what the word "frequency" means. ||
 * Rahul || http://surendranath.tripod.com/Applets/Waves/Twave01/Twave01Applet.html

To use this applet because turn on your VPN or use a proxy

This applet it about how the amplitude and the frequency changes when you slide the bars, and how the wave lengths of the waves changes. It shows a graph of a traveling wave

To use this applet you, to change the waves you move the slider left to decrease it and right to increase it.

What do the waves do when you change the frequency, to a higher frequency ?and a lower frequency? ( To change the frequency you slide the frequency bar left and right) What happens to the height when you increase or decrease the amplitude? how long does it take for one wave take to pass you and the next wave to hit you if you are standing on the middle pole? ||
 * Isaac ||  ||
 * Cherry || http://phet.colorado.edu/sims/wave-on-a-string/wave-on-a-string_en.html

This applet shows how the energy travels through a string.

Above the Reset button, there are three things to chose from. Click the circle that has the word Oscillate next to it. On the left side of the page there are also three things to choose from. Click the circle that says Fixed End.

1) Change the Amplitude at the top to 20, then change it to 100. Explain what happens to the beaded string. Do not change the Frequency, Damping, or Tension.

2) Keep the Amplitude at 50, and change the Frequency to 10, observe what happens. Then change the Frequency to 75. Describe what happens to the string. What is the definition of Frequency based on what you observed?

3) If you keep the Amplitude at 50, the Frequency at 30, the Damping at 5, and keep the tension at high tension. Explain how the string is moving. ||
 * Ken || []

In this site, you can see the relation between frequency and wavelength. If you increase the frequency, than wavelength would decrease and if you decreasing the frequency, than wavelength would became increasing.

check only box named blue. uncheck the red and sum bow. and first box is frequency and second box is amplitude. third is... never mind.

1.insert the bigger measure in the first box. What can you see?

2.insert the smaller measure in the first box. What can you see?

3.insert the bigger measure in the second box. what can you see?

4. insert the smaller measure in the second box. what can you see?

5. what is the relation between frequency and amplitude? ||
 * Christine || http://phet.colorado.edu/en/simulation/wave-interference

This applet is about waves created by water droplets falling from a faucet into a sink. You are going to control how fast the droplets fall and how the waves change.

Describe what you see when you slide the frequency bar to the right. (Notice how the crest of the wave in the graph matches the lighter color wave and the trough of the wave matches in the graph matches the darker color wave on the display.)

Describe what you see when you slide the frequency bar to the left.

Describe what you see when you slide the amplitude bar to the right.

Describe what you see when you slide the amplitude bar to the left.

After observing the water waves, what do you think the word frequency means? What does amplitude means? || This Applet is about waves traveling from the medium air to another medium. It shows the reflection of the wave reflecting of from the new medium and the refraction. Imagine your flying in an air plane and looking down on these waves. Don’t look at the reflection waves, concentrate on the refraction, the bending of the waves when they change to a different medium to travel through, the waves that travel through the green. Now look at different waves that are formed when Light waves go from air to another medium, for example from air to water. What do you see, when you change the light waves going into different mediums? Watch the numbers at the very bottom in the green and watch the blue line. What do you see there? What do you notice about the speed of the waves, when they travel through the other medium? ||
 * Sonja || []
 * Thomas || http://www.falstad.com/wavebox/

The 3-D Wave Simulation is a java applet that is created to show how waves work in three dimensions, and the author of this applet is Paul Falstad. In the setup drop-down menu at the right, you can choose different incoming sources. You also can adjust various items, such as simulation speed, brightness, image resolution, and etc within the same menu bar.

1. What is the definition of frequency? 2. What will happen when the mouse is clicked and dragged? 3. What item will disappear when you click show intensity checkbox? 4. What do you learn from this applet? 5. What will happen when you change the frequency and the simulation? 6. Choose “plane wave” from the setup drop-down menu and “show sides”. When you move the cube, how many waves do you see on the screen? What kind of waves does it look like? ||
 * Amy || http://www.grc.nasa.gov/WWW/k-12/VirtualAero/BottleRocket/airplane/sndwave.html

What is wavelength? The wavelength is the distance between the two waves. What is frequency? Frequency is the time interval between waves passing. What is pitch? The pitch is the highness and the lowness of the wave.

1. First you click start, then watch the wave when the fly has the speed of zero. The wavelength stays the same but the sound increased immediately when it reaches the microphone. 2.If you moved the speed bar in the bottom to 1/5 of the bar. The fly is moving in a constant speed, and the sound increased when it passes over the microphone. The pitch increased as the frequency increased. But the wavelength shortened. 3.You will also find that the pitch and the frequency of the wave don’t depend on the speed. They depend on the material and the state of air, in our simulation is the microphone. ||
 * Jakob || [[file:applet thing.pdf]] ||
 * Janette || http://www.ngsir.netfirms.com/applets/diffraction/2X/Diffraction.htm

This applet shows waves viewed from the top while traveling through a opening in the wall.

1.) Move the “wavelength” button. Describe what happens to the wave when you increase the wavelength.

If you want to restart the applet click where it says “click me to restart”.

2.)There is a bar in the middle t of he wave applet that is called the slit, if you move the “slit width” button, the opening of the bar becomes bigger or smaller, when you make the opening in the bar bigger, describe what happens to the waves.

3.)Contrast means if it is dark or light, you can make the applet dark or light by moving the “contrast” button. By changing the contrast you can see the waves clear or not so clear. If you change the contrast what do you see when the contrast increases? ||
 * Jacky || The Traveling Wave applet help define what is wavelength, frequency, and amplitude. You would be able to learn about these things and understand their relationship in a wave. It also creates unique waves with different wavelength, frequency, and amplitude.

click here to access the applet: http://www.ngsir.netfirms.com/englishhtm/TwaveA.htm

Read the paragraph for instructions to work with the applets and try to answer the questions after using the applet:

The applet shows a wave when you press the “start” button. As you slide the button for the amplitude, you will notice wave would be higher or lower. Beside it is the wavelength, and when you try to slide the button, the wave gets longer or shorter. More or less waves would appear on the applet. The last button is frequency, as you slide the button, the waves move faster or slower. You might notice when you change the frequency, the wavelength change. You could change that by clicking on the button under the frequency, and switch it to independent. This applet could create unique waves with different wavelength, frequency, and amplitude. Under the start button, there is a “freeze” button. When you press this button, the wave freezes. Now you are able to press the “step” button to see how this wave move step by step. Also, when you click on select, and then mark the V.Line, you could click on the green line and create a dot with a white line. When you start the wave again, you could see that the point slides up and down on the white line.

questions:

How does the frequency, wavelength and amplitude effect the wave?

What do you notice about the point that you created?

What can you conclude about the meanings of frequency, wavelength, and amplitude? ||