9th Grade Physical Science Core Labs

Links:

Purpose:
To learn the range of human hearing and design a double-blind experiment.

Summary:
Students will test the frequency limit of the ear, design a double-blind experiment, and test human ability to distinguish differences in frequency.

Objectives Links:
6: B. Waves

Process Skills Checklist

Materials:

• electronic timer
• 2 sound generators
• 2 speakers

Safety Concerns:
Standard operating procedures apply. Ensure that sound intensity remains at safe levels.

Revision Date:
August 2006