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Third Quarter Project for Science - Mrs. Rohrkemper

The project for the third quarter is about sound.  You may use unit 5 in your book as a
resource, but you are encouraged to use outside resources as well.  Complete at least ten
of the following activities and turn them in inside a separate folder.  You are encouraged
to design a cover page.  Make sure each item is well-labeled and complete.  You can
receive up to ten extra points for completing each entry on the computer.  All projects
must be turned in on or before the due date to get 200 points.  You may earn the first 100
points by showing me one completed project item each of the first 5 weeks of the quarter.

Your Project is Due on  Wednesday, March 10, 1999

1.  Write a paragraph summarizing your thoughts about each of the following:
     1.  If a tree falls in a forest and no one is there to hear it, will there be a sound?
     2.  How does sound travel from one place to another?  How fast does it travel?
     3.  How can a guitar string be made to produce a higher sound?  a louder sound?
     4.  What factors do you think affect the acoustics of a room?

2.  Write at least a one page story about the effects that different sounds have on you in a
     24 hour period.

3.  Adult Signature Required   Create a musical instrument that will produce at least 5
     different pitches.  Diagram your instrument and describe the sounds it produces in
     terms of  pitch, loudness, duration (length of time), and quality.

4.  Using the graph (SciencePlus page 273) Sounds Heard by Animals, make a chart
     listing the approximate range of vibration for each animal listed.  Then use your data to
     answer the following questions:  (use complete sentences)
    1.  Above what rate of vibration are there sounds that humans cannot hear?
    2.  Which animals can hear higher sounds than are audible to humans?  lower sounds?
    3.  Which animal can hear the largest range of vibration rates?
    4.  What is the range of sound that can be heard by a green frog but not a bird?
    5.  Which animal misses most of the sounds heard by humans?  What vibration range
         do humans share with this animal?

5.  Explain to a deaf person (at least 1 page) using words and illustrations how to
     understand the ideas of high and low pitched sounds (vibration), soft and loud sounds
     (amplitude), and how we tell one sound from another (quality).

6.  Use the sound produced by a ruler on a table to plan an activity that would explain
     the following words:  vibration, amplitude, frequency.  Include a diagram with each

7.  Some animals use echolocation to find food.  Research one of these animals and write
     about it.  How do they use echolocation to survive?  How is echolocation used by
     submarines?  Also, find out what sonar stands for.  Explain what sonar is and explain
     why and how ships use it.

8.  Using the following materials, design, write up(use 6 steps of Scientific Method), and
     do an experiment using echoes to measure the speed of sound.
     Materials:  measuring tape or meterstick, wall, watch with second hand
     Information:  the time for a sound to travel a certain distance (speed)
     Equation:  speed=distance divided by time
     Sound:  clapping
     Distance:  to the wall and back to your ears
     Time:  the time between the clap and its echo
     Sound travels in air at a speed of slightly more than 330 m/s (at 0 degrees C.)
     How does this compare to the speed you calculated?  What effect does temperature
     have on the speed of sound?

9.  Find a diagram of the human ear.  Draw or make a model of the ear.  Be sure to color
     and label all parts.  Write a paragraph describing how sound waves travel through your
     ear.  Begin when sound enters and continue to the brain.

10.Make a crossword puzzle about sound.  Your puzzle should include at least 10
      definitions to the following words as they relate to sound:  octave, resonance,
      decibel, megaphone, oscilloscope, sonogram, waves, pitch, larynx, syrinx, hertz,
      wavelength, acoustics.

11.Use this web site:
      Use ideas from this website to draw a design and construct a toy that produces sound.
      Include a description of how the sound is produced and how the toy is made.

12.Use this website:
      Research a question about sound.  Make up your own question and answer about
      sound using these questions and answers as a guide.