A. WAVES Normally when energy is transferred from one place to another a disturbance is involved. Waves can travel through air, water, and solid materials. Mechanical and electromagnetic waves are the two types of waves. Medium is the material in which a wave travels.
Mechanical Waves
When a source of energy causes a medium to vibrate, a mechanical wave is formed. Mechanical waves require a medium to travel. There are two different types of mechanical waves: longitudinal and transverse waves. The major difference between them is that the transverse waves the displacement of the medium to the direction of propagation of the wave is perpendicular and in the longitudinal is parallel.
Longitudinal waves
The wave travels in the same direction as the medium vibrates. Longitudinal waves are sound waves in air. The displacement of the medium in longitudinal waves is parallel to the propagation of the wave. The best example of a longitudinal wave is sound. Transverse waves A transverse wave is a wave that vibrates the medium at right angles or perpendicular to the direction the wave is traveling. …show more content…
When a transverse wave is a high point is called a crest, and when it's on a low point is called trough. An example of a transverse wave could be a ripple on a pond. Concentric circular ripples which move outward from the point of impact will produce when a pebble is thrown into a pond. A tossed pebble provides the energy to generate a traveling wave. http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/tralon.html Electromagnetic waves “A transverse wave that involves the transfer of electric and magnetic energy (Don Buckley, 2011)” they are made of vibrating magnetic and electric fields that move through a medium or space at the speed of light.
B. SOUND “Sound is a disturbance that travels through a medium as a longitudinal wave ( Don Buckley, 2011 )”. Normally when energy is transferred from one place to another a disturbance is involved. Sound waves can transport the energy through a medium air, water, and solid materials. Temperature, stiffness, and density can affect the speed of sound. Depending on the stiffness of the medium is how fast sound travels. Sound travels more quickly in stiff materials due to the particles being close together. For example, if you knock on both a steel and wooden door with the same thickness, the door made of steel transmits sound more easily because steel is stiffer than wood. The particles bounce back and forth quickly as the refractions and compressions of the sound waves pass by. Over longer distances, in stiffer media sound travels better because sound waves lose energy more slowly in harder media. Sound travels the fastest in solids and slowest in gases. Sound travels better in harder materials, which means “Density is how much matter or mass there is in a given amount of space or volume ( Don Buckley, 2011 )”. Sound travels more slowly in denser materials with the same stiffness. Density is defined by the mass per unit volume. The more mass it has in a given volume, denser the material. It is harder for the particles to move as sound waves pass by, in denser materials. Sound is slowed down by this. For example, if someone tapped on a steel pipe, the sounds would travel through the pipes at a speed of 5,200m/s. This is almost four times faster than the speed of sound in lead. Steel is both stiffer and less dense than lead, so the speed of sound in steel is greater than in lead. Frequency / Pitch The pitch is the degree of highness or lowness on a tone. It depends on the frequency of the sound wave. Loudness / Intensity Depending on the energy and the sound wave is how loud a sound is. Loudness is an important factor of sound. A sound is louder when you are closer to it. For example, a shout from a block away can be just as loud Intensity is when a sound wave covers a small area when it is close to the sound source. It starts covering more area as it travels away from the source; however, the energy of the wave stays the same. Decibels It is the unit used to measure the loudness of sound. A 0dB is the loudness of sound you can barely hear; a
Mechanical Waves
When a source of energy causes a medium to vibrate, a mechanical wave is formed. Mechanical waves require a medium to travel. There are two different types of mechanical waves: longitudinal and transverse waves. The major difference between them is that the transverse waves the displacement of the medium to the direction of propagation of the wave is perpendicular and in the longitudinal is parallel.
Longitudinal waves
The wave travels in the same direction as the medium vibrates. Longitudinal waves are sound waves in air. The displacement of the medium in longitudinal waves is parallel to the propagation of the wave. The best example of a longitudinal wave is sound. Transverse waves A transverse wave is a wave that vibrates the medium at right angles or perpendicular to the direction the wave is traveling. …show more content…
When a transverse wave is a high point is called a crest, and when it's on a low point is called trough. An example of a transverse wave could be a ripple on a pond. Concentric circular ripples which move outward from the point of impact will produce when a pebble is thrown into a pond. A tossed pebble provides the energy to generate a traveling wave. http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/tralon.html Electromagnetic waves “A transverse wave that involves the transfer of electric and magnetic energy (Don Buckley, 2011)” they are made of vibrating magnetic and electric fields that move through a medium or space at the speed of light.
B. SOUND “Sound is a disturbance that travels through a medium as a longitudinal wave ( Don Buckley, 2011 )”. Normally when energy is transferred from one place to another a disturbance is involved. Sound waves can transport the energy through a medium air, water, and solid materials. Temperature, stiffness, and density can affect the speed of sound. Depending on the stiffness of the medium is how fast sound travels. Sound travels more quickly in stiff materials due to the particles being close together. For example, if you knock on both a steel and wooden door with the same thickness, the door made of steel transmits sound more easily because steel is stiffer than wood. The particles bounce back and forth quickly as the refractions and compressions of the sound waves pass by. Over longer distances, in stiffer media sound travels better because sound waves lose energy more slowly in harder media. Sound travels the fastest in solids and slowest in gases. Sound travels better in harder materials, which means “Density is how much matter or mass there is in a given amount of space or volume ( Don Buckley, 2011 )”. Sound travels more slowly in denser materials with the same stiffness. Density is defined by the mass per unit volume. The more mass it has in a given volume, denser the material. It is harder for the particles to move as sound waves pass by, in denser materials. Sound is slowed down by this. For example, if someone tapped on a steel pipe, the sounds would travel through the pipes at a speed of 5,200m/s. This is almost four times faster than the speed of sound in lead. Steel is both stiffer and less dense than lead, so the speed of sound in steel is greater than in lead. Frequency / Pitch The pitch is the degree of highness or lowness on a tone. It depends on the frequency of the sound wave. Loudness / Intensity Depending on the energy and the sound wave is how loud a sound is. Loudness is an important factor of sound. A sound is louder when you are closer to it. For example, a shout from a block away can be just as loud Intensity is when a sound wave covers a small area when it is close to the sound source. It starts covering more area as it travels away from the source; however, the energy of the wave stays the same. Decibels It is the unit used to measure the loudness of sound. A 0dB is the loudness of sound you can barely hear; a