SOUND - Extensions
Can You Design an Investigation to...
The "extensions" are hands-on activities which extend the investigation
begun with the core project. These are smaller and less directed projects
which are either suggested by students or chosen from possibilities presented
You have been working very hard. It may not be obvious,
but you have gained a great deal. Let's take a moment to review those gains.
You should now be familiar with the terms which are used to describe waves in
general and sound waves in particular. You should have a greater understanding
of the connection between sound waves and the physiological experience of
hearing. You should also recognize that sound waves can be modified, sometimes
dramatically, by interaction with objects and other sound waves.
In addition to greater knowledge, you have also created the fundamental tools
required to study sound.
Now comes the really good part. You are going to design and conduct a short
scientific investigation. Your teacher will probably need to set some limts. This
is not uncommon. Every research laboratory has to live with limits. The trick
is to make the most of knowledge, tools, and time that you do have.
Student Defined Extensions:
- Design Guide to developing
an extension; framing the question, designing the research, and reporting
the results of the study.
These extensions involve measurements of sound intensity. For these investigations
you will need to built a Sound Level Meter. You will also need a sound source. The tone generator you built
in the Core Project will serve quite well if you add a speaker.
- Reporting Guide for collecting, synthesizing,
and reporting the work done on the "extension" you choose.
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