Each of the examples in this question are scenarios in which sound would be transferred because they all cause vibrations that travel through a medium.

Sound waves must travel through a medium. This medium can be a solid, liquid, or gas. The sound waves move through each of these mediums by vibrating the molecules in the matter. Sound travels fastest through solids. Molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to move more quickly through it.

Matter is made up of particles, and energy can be transferred through these particles. Sound energy decreases the further the distance required to travel. As the sound is transferred through matter, it will sound softer and more difficult to hear if the distance between speaker and listener is increased.

A conch horn is a wind instrument made from a conch shell. When the player blows into the end of the conch horn, a musical tone is created because the vibrations travel through the air. While it may not be a typical instrument, it does transfer sound energy.

When asked, "what is sound," it seems like it is a straightforward definition to explain, but there are so many layers to it that it is a complicated answer. Sound is the movement of energy by vibrations through substances in the form of waves. When a musician bangs a drum, it creates a vibration; this vibration creates sound waves that travel to our ears to be received and processed. Though the waves are invisible, they are still energy transferring information.

The vibrations of low pitched sounds move molecules at a slower rate than the vibrations of higher-pitched sounds. This means that there is more time between vibration pushes. More time between pushes means that the frequency is lower.

All of these items are household items that use or transfer different types of energy. The only object that transfers energy as sound is an alarm clock. An alarm clock is powered with electricity and then produces a sound when set to wake someone up at a particular time. Vibrations in the air create the soundwaves it provides.

Sound is produced when something vibrates. Vibrations travel in longitudinal waves, which create areas of high and low pressure. Without vibrations, these soundwaves cannot be formed.

The reason Danthony heard so many different sounding voices at the concert was because of factors that affect sound waves. Wavelength is the measurement of a wave from crest to crest or from trough to trough. The longer the wavelength, the lower the frequency of a sound. Frequency describes how often the particles of a medium vibrate when sound waves pass through the medium. Frequency is measured in Hertz. Frequency determines the pitch of a sound. Pitch determines how we hear the sound. Amplitude is the height of a wave. It measures to the crest or trough of a wave. Amplitude determines how loud a sound is. The larger the amplitude is, the louder the sound will be.

Because outer space is a vacuum, there is virtually no air. Since sound is vibrating air, sound does not travel in space. Crashing asteroids, supernovas, and burning planets would be silent.