Waves Web Quest - Chapter 18

Waves

Chapter 18

Begin by visiting: http://sunshine.chpc.utah.edu/labs/waves/wave_basics/waves.htm?ASPIRE_Session=4c6797aa01065603d06aa431c8d2ed64

Read all the information on the page and answer the following questions.

1. What are light and sound forms of, and how do they move?

2. What do waves transfer? Please give examples.

3. Infer why a boat in the ocean only moves up and down as the waves pass but is not carried to shore by waves.

4. Explain what a periodic wave is and give an example.

5. In the space below, sketch and label an example of a wave.

6. At the bottom of the page are three words underlined in blue. Click on each word, complete each activity, explain your observations and define each word.
Amplitude:

Define –

Observations -

Wavelength:

Define –

Observations -

Frequency:

Define –

Observations -


7. Scroll up to the interactive wave window. (With green air molecules).

Click on the left and drag up and down. (You just created a transverse wave) Summarize your observations below.

8. Now move the molecules left and right. (You just created a compressional wave or longitudinal wave) Summarize your observations below.


Now Go to: http://www.glenbrook.k12.il.us/gbssci/Phys/Class/waves/u10l1c.html

Read all the information on the page and answer the following questions.

9. Compare and contrast a transverse wave and a longitudinal (compressional) wave. Please give examples of each kind of wave.


10. Identify at least one way in which scientists categorize waves.


Now go to: http://surendranath.tripod.com/Applets/Waves/Twave01/Twave01Applet.html

Leave setting on “progressive wave” (top) but change the settings for amplitude and wavelength. (bottom)

Observe the wave carefully as you change the values for wavelength and answer the following question.

11. What is the relationship between frequency and wavelength? What happens to the wavelength as the frequency increases?

~ SOUND ~

Now go to: http://www.fi.edu/fellows/fellow2/apr99/soundsci.html

Read all the information on the page and answer the following questions.

12. Are sound waves transverse or compressional? And how do they transfer energy?

13. Through what medium are sound waves able to travel? Unable to travel?

14. Imagine you are aboard a space craft somewhere in the galaxy. Would you be able to hear the roaring approach of another ship?


Now go to: http://library.thinkquest.org/19537/

Click on the physics link to the left.

Then click on the Properties of a Sound Wave link. Read all the information on the page and answer the following.


15. What is the period of a sound wave?

16. Identify the relationship between pitch and frequency.


Now click on the green arrow at the bottom right of the page. Read all the information about the SPEED OF SOUND on the page and answer the following.

17. What are the two factors that affect the speed of sound? Through which medium does sound travel the fastest?


Now click on the Sound lab link located on the left column. You will see 5 sound applets. Interact with each one and summarize you observations. Explanations for each one can be found on the website as well.

1.Beats Applet -



2.Doppler Effect Applet -



3.Harmonics Applet -



4.Wave Applet -



5.SoundScene Applet -

Electricity and Magnetism Web Quest

Begin by visiting

http://micro.magnet.fsu.edu/electromag/java/faraday/

1. In the space below explain what you observed.


2. What does the deflection of the compass indicate?


3. Define: Electromagnetic Induction:

http://micro.magnet.fsu.edu/electromag/java/faraday2/

Read about Faraday's Magnetic Field Induction Experiment then use the mouse to move the magnet inside the coil.

4. In the space below explain what you observed.


5. What is necessary to induce a current in a nearby circuit?


6. What does a galvanometer measure?

7. Analyze Faraday's Magnetic Field Induction Experiment and determine how it helped lead to the development of modern day power plants. Please include examples and at least one diagram.

Now go to:

http://encarta.msn.com/media_701765048_761574329_-1_1/Electric_Generator.html

Watch the short animation on electric generators and answer the following questions.

8. What does an electric generator do?

9. Explain why the generator in the animation is considered an AC generator. Predict how an AC generator is different then a DC generator.

Now go to:

http://electronics.howstuffworks.com/motor.htm

Watch the video (optional), read the page information then click “Next”
Read “Inside an Electric Motor” and complete the following.

10. What does a motor use to create motion?

11. Explain what causes rotational motion in an electric motor.

12. In the space below draw a diagram of an electric motor and label the 6 main parts.

Now go to: http://www.andythelwell.com/blobz/

Click “enter” and follow the directions on the web page. Note that there are 5 sections; each section has an information portion, an activity and a quiz. Please complete all three for each section.

Now go to: http://education.jlab.org/vocabhangman/index.html

Scroll down to the Force, Motion and Energy section and check the electricity and magnetism box. Now scroll to the bottom and click on the “Ready – Begin” link. Complete the interactive hangman game. There are several questions so be sure to click “next question”.

After you complete the hangman activity, visit:
http://micro.magnet.fsu.edu/electromag/java/transformer/index.html

Read all the information on the page then answer the following questions.

13. Briefly explain what transformers are used for.

14. Compare and contrast a step up transformer and a step down transformer.

15. Now change the voltage and winding levels and closely observe the changes in the input/output voltage. In the space below, briefly summarize your observations.

Finally: Visit: http://ippex.pppl.gov/interactive/electricity/
Read the introduction then click on the right arrow.

Now read the information that follows and answer the questions below.

16. Define Electricity.

17. Briefly explain what static electricity is?

18. Now that you have explained static electricity, you are ready to try the balloon activity found on the site and explain why the balloon sticks to the wall.

Continue to click on the right arrow.

19. Define Current electricity

20. What does a common circuit consist of?

(HINT) It is a good idea to bookmark this website at home so you may use it as a reference for homework/studying

If you have finished early, you may visit http://www.wonderville.ca/v1/home.html
Click on energy street and design your own energy efficient city street.