You get to expand your knowledge of waves by studying the interaction of sound waves with different materials.
After completing this tutorial, you will be able to complete the following:
Why does a sound seem softer to a person farther away from the source than a person close to the source?
~ A sound seems softer to a person farther away from the source because, as the sound waves move away from the source, the intensity of the sound waves naturally decreases as the waves spread out over a larger area. This decreases the loudness of the sound. In addition, the intensity of the sound waves may also be reduced as they interact with objects around them and transfer energy to them.
What are some ways sound waves interact with objects in their environment?
~ As sound waves move through an environment, they may pass through some objects or be reflected or absorbed by others.
What happens to the energy lost by sound waves traveling away from a source?
~ As sound waves move farther and farther away from the source, the sound wave energy is eventually converted into another type of energy, such as thermal energy.
How is kinetic energy related to sound energy?
~ Kinetic energy and sound energy are closely related because, in many cases, the decreasing energy of sound waves is converted into kinetic energy. Also, the sound wave itself is the motion of air particles, and it therefore has kinetic energy.
|Approximate Time||2 Minutes|
|Pre-requisite Concepts||Students should have a general understanding of the following terms: energy, sound, and sound energy.|
|Type of Tutorial||Animation|
|Key Vocabulary||energy, sound, sound energy|