Electromagnetic waves do not require a medium in order to transport their energy. Mechanical waves are waves that require a medium in order to transport their energy from one location to another. Sound is a mechanical wave and cannot travel through a vacuum. In short, Sound Travels in both directions up and down , Sound is omnidirectional which means it can travel in any way and direction, however, there are some factors that may influence the direction of the sound.
The speed of sound is greater in hot air than it is in cold air. This is because the molecules of air are moving faster and the vibrations of the sound wave can therefore be transmitted faster. This means that when sound travels from hot air to cold air or from cold air to hot air it will refract. Light travels as a wave. But unlike sound waves or water waves, it does not need any matter or material to carry its energy along. This means that light can travel through a vacuum—a completely airless space.
It speeds through the vacuum of space at , miles , km per second. Sound waves need to travel through a medium such as solids, liquids and gases. The sound waves move through each of these mediums by vibrating the molecules in the matter. The molecules in solids are packed very tightly. Liquids are not packed as tightly. Answer and Explanation: Sound travels faster in water than in air because the molecules in the water are closer together causing more vibrational energy to be transmitted and.
Traveling Waves Sound is produced when something vibrates. The vibrating body causes the medium water, air, etc. Vibrations in air are called traveling longitudinal waves , which we can hear. Sound travels in air as a series of compressions and rarefactions.
When an object vibrates it will move back and forth. As it moves forth, it pushes adjacent air particles. This is a compression: an area of high pressure that moves along the direction of the sound wave. Which state of matter does sound travel fastest through?
Category: science physics. Of the three phases of matter gas, liquid, and solid , sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Question c7b Question c Why do sound waves need a medium?
Why are sound waves in air characterized as longitudinal? What sound waves can humans hear? How do sound waves travel through solids? See all questions in Sound waves. Most of our everyday experiences are when a sound travels first through air and then through water or a solid. When the sound wave transfers from air into a solid some of it is reflected back into the air and some may be absorbed by the new medium.
The noise coming from a room will be reduced if an observer outside closes the door. Sound from within the room will travel to the closed door and start it vibrating. The vibrating door will set the air on the outside vibrating too and a little of the original sound will be transmitted to the observer.
However, some of the sound arriving at the door will have been reflected back into the room actually making the noise inside the room louder! Also some of the sound energy will have been used up in making the door begin to vibrate so we can say some of the sound has been absorbed by the door.
Hearing sounds through solids.
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