Communication - Vibration, Electronic Signals, and Electromagnetic Radiation
by
Regan Lum
- Grade Levels:
9th - 12th grade
- Prerequisites:
- Knowledge of Sound; Electricity and Magnetism; Electromagnetic Radiation, knowledge of
- Time Requirements:
- Full Unit: Approximately - Several days to two weeks
- Subjects/Topics:
- Astronomy/Space Science: telemetry; electronic signals; satellites
- Physics: electronic signals; fiber optics
- Math: binary code
Description:
The main methods of communication are speaking and listening.
One of the limitations of communication through speech is that the listener
must be within shouting distance. Through the miracle of science, we can
speak to a friend that is far away by sending our voice through the air, wire, or glass fiber in the form of electromagnetic radiation or electronic signals.
We can even speak to machines and tell them what to do.
Objectives:
Students will be able to:
-
Explain what sound is and how it is produced.
- Explain how our voices can be converted into an electronic signal
(via microphones) and sent through a wire or saved on magnetic tape.
- Explain how signal on magnetic tape can be converted back into
sound using a speaker.
- Explain how electronic signals can be converted to electromagnetic
radiation (light and radiowaves) and sent through the air or fiber optics.
- Explain how we can talk to (via binary code) and control machines miles
away.
- Explain how we can enhance our senses by using machines to collect
information (data).
- Describe how products of science and technology change society.
Unit Details
For More Details On This Unit Go to
Preparation
Lesson Plan
References
(Last Update: Nov 10, 1995 )
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