Concept Overview:
1. Sound requires a medium for its transmission
Lecturer Procedure
Step(s) to Follow | Expected Result |
---|---|
1. Flip the switch to start the bell ringing. | Bell should be heard clearly by all students. |
1. Turn on vacuum pump. | Sound created by bell will decrease in volume. |
1. Turn off vacuum pump. | Bell can be seen ringing, but sound cannot be heard (or can barely be heard) |
1. Allow air into the system as rapidly as possible | The increasing sound is rapidly heard, usually to the back of the room |
Category
Tutorial
Identifier
M: WM&S - 014