- Sound | Properties, Types, Facts | Britannica
Sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium A purely subjective, but unduly restrictive, definition of sound is also possible, as that which is perceived by the ear
- sound - Kids | Britannica Kids | Homework Help
Pitch, Intensity, and Quality Every sound has three basic properties: pitch, intensity, and quality The pitch of a sound is how high or low it is Faster vibrations cause sounds with a higher pitch The intensity of sound is how loud or soft it is Intensity depends on the strength of the vibrations Stronger vibrations cause louder sounds
- energy - Kids | Britannica Kids | Homework Help
The total random moving energy of all of the atoms and molecules in an object is called heat energy (or thermal energy) The moving energy of a rock rolling down a hill is called mechanical energy
- Properties of sound | Britannica
sound, Mechanical disturbance that propagates as a longitudinal wave through a solid, liquid, or gas A sound wave is generated by a vibrating object The vibrations cause alternating compressions (regions of crowding) and rarefactions (regions of scarcity) in the particles of the medium
- Energy | Definition, Types, Examples, Facts | Britannica
Energy, in physics, the capacity for doing work It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or various other forms There are, moreover, heat and work—i e , energy in the process of transfer from one body to another Learn more about energy in this article
- How Does Sound Travel? | Waves, Speed, Frequency, Amplitude - Britannica
The energy of an acoustic, electromagnetic, or other wave is proportional to the square of its amplitude—i e , the maximum displacement or movement of a point on the wave—and, as the wave passes through a substance, its amplitude steadily decreases
- Sound intensity | Decibels, Waveforms Pressure | Britannica
The intensity of one sound can be compared to that of another of the same frequency by taking the ratio of their powers When this ratio is 10, the difference in intensity of the sounds is said to be one bel, a unit named in honour of the United States inventor Alexander Graham Bell
- energy transformation - Kids | Britannica Kids | Homework Help
Energy is the ability to do work It is power that exists everywhere in many forms The main forms of energy are light, chemical, mechanical, nuclear, electrical, heat, and…
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