Wave motion is activity that carries energy from one place to another without actually moving any matter. Studies of wave motion are most commonly associated with sound or radio transmissions, and, indeed, these are among the most common forms of wave activity experienced in daily life.
For example, water molecules in the crest of an ocean wave rotate in the same direction as the wave, while those in the trough of the wave rotate in a direction opposite to that of the wave, yet there is no net motion of the water: only energy is transmitted along the wave.
But the water particles that make up the wave are actually moving in a vertical direction. The boat itself does not move toward the shore or, if it does, it's at a much slower rate than that of the water waves themselves. The energy carried by a water wave is obvious to anyone who has watched a wave hit the shore.
The matter itself may move in place, but, as with all types of wave motion, there is no net movement of matter — only of energy. A type of harmonic motion, typically periodic, in one or more dimensions. For wave motion, a period is the amount of time required to complete one full cycle of the wave, from trough to crest and back to trough.
Wave motion is a disturbance that moves from place to place in some medium, carrying energy with it. Probably the most familiar example of wave motion is the action of water waves.
energyIn a wave phenomenon, energy can move from one location to another, yet the particles of matter in the medium return to their fixed position. A wave transports its energy without transporting matter. Waves are seen to move through an ocean or lake; yet the water always returns to its rest position.
'Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.
Energy is transmitted by a wave. ( There is a transmission of energy when a wave travels in a given medium.
Transverse waves cause the medium to move perpendicular to the direction of the wave. Longitudinal waves cause the medium to move parallel to the direction of the wave.
Energy is transferred from one place to another when a wave travels in a medium.
energyWave motion transfers energy from one point to another without permanent displacement of the particles of the medium. Therefore option 3 is correct.
Transverse WavesTransverse Waves The animation below shows a one-dimensional transverse plane wave propagating from left to right. The particles do not move along with the wave; they simply oscillate up and down about their individual equilibrium positions as the wave passes by.
When two or more waves meet, they interact with each other. The interaction of waves with other waves is called wave interference. Wave interference may occur when two waves that are traveling in opposite directions meet. The two waves pass through each other, and this affects their amplitude.
Wave motion is activity that carries energy from one place to another without actually moving any matter. Studies of wave motion are most commonly associated with sound or radio transmissions, and, indeed, these are among the most common forms of wave activity experienced in daily life. Then, of course, there are waves on the ocean or the waves produced by an object falling into a pool of still water — two very visual examples of a phenomenon that takes place everywhere in the world around us.
The transmission disturbs the medium by displacing the medium. For example, water waves propagate through displacement (not linear movement) of water molecules; sound waves propagate via displacement of air molecules. Light also propagates via wave — but not in the same manner as water and sound. Light is transmitted via electromagnetic waves, the alternating of disturbances in electrical and magnetic fields.
A type of wave that involves matter. Ocean waves are mechanical waves; so, too, are the waves produced by pulling a string. The matter itself may move in place, but, as with all types of wave motion, there is no net movement of matter — only of energy.
(Actually, ocean waves are simply perceived as transverse waves; in fact, as discussed below, their behavior is rather more complicated.) In a longitudinal wave, on the other hand, the movement of vibration is in the same direction as the wave itself.
A wave in which a uniform series of crests and troughs follow one after the other in regular succession. By contrast, the wave produced by applying a pulse to a stretched string does not follow regular, repeated patterns.
Two types of waves exist: transverse and longitudinal. A transverse wave is one that causes the particles of the surrounding medium to vibrate in a direction at right angles to the direction of the wave. A water wave is an example of a transverse wave. As water particles move up and down, the water wave itself appears to move to the right or left.
A wave is nothing more than a disturbance that moves from place to place in some medium, carrying energy with it. Since the behavior of waves is so closely related to the concept of oscillations , that is a good place to start.
Probably the most familiar example of wave motion is the action of water waves. A boat at rest on the ocean moves up and down as water waves pass beneath it. The waves appear to be moving toward the shore. But the water particles that make up the wave are actually moving in a vertical direction. The boat itself does not move toward the shore or, if it does, it's at a much slower rate than that of the water waves themselves.
They can reflect from surfaces and refract, or change their direction, when they pass from one medium into another. An example of reflection is the light we observe that bounces off an object, allowing us to see that object. An example of refraction is the apparent dislocation of objects when they are placed underwater.
Two types of waves exist: transverse and longitudinal. A transverse wave is one that causes the particles of the surrounding medium to vibrate in a direction at right angles to the direction of the wave. A water wave is an example of a transverse wave. As water particles move up and down, the water wave itself appears to move to the right or left.
Like any wave, a water wave appears to move up and down in a regular pattern. The highest point reached by the wave is known as the wave crest; the lowest point reached is the wave trough (pronounced trawf).
Amplitude : The maximum displacement (difference between an original position and a later position) of the material that is vibrating. Amplitude can be thought of visually as the highest and lowest points of a wave.
When a wave travels down a cord-say, from left to right as in Fig. 1-the particles of the cord vibrate up and down in a direction transverse (that is, perpendicular) to the motion of the wave itself. Such a wave is called a transverse wave (Fig. 4a). There exists another type of wave known as a longitudinal wave. In a longitudinal wave, the vibration of the particles of the medium is along the direction of the wave’s motion. Longitudinal waves are readily formed on a stretched spring or Slinky by alternately compressing and expanding one end. This is shown in Fig. 4b, and can be compared to the transverse wave in Fig. 4a.
A wave consists of oscillations that move without carrying matter with them. Waves carry energy from one place to another. Energy is given to a water wave, for example, by a rock thrown into the water, or by wind far out at sea. The energy is transported by waves to the shore.
Besides these two types of waves, surface waves can travel along the boundary between two materials. A wave on water is actually a surface wave that moves on the boundary between water and air. Water waves involve a combination of both longitudinal and transverse motions.
Note that the graph looks much like a transverse wave. Both transverse and longitudinal waves are produced when an earthquake occurs. The transverse waves that travel through the body of the Earth are called S waves (S for Shear), and the longitudinal waves are called P waves (P for pressure) or compression waves.
Wavelength, frequency, and wave velocity all have meaning for a longitudinal wave. The wavelength is the distance between successive compressions (or between successive expansions), and frequency is the number of compressions that pass a given point per second.
An important example of a longitudinal wave is a sound wave in air. A vibrating drumhead, for instance, alternately compresses and rarefies the air in contact with it, producing a longitudinal wave that travels outward in the air, as shown in Fig. 5.
In a longitudinal wave, the vibration of the particles of the medium is along the direction of the wave’s motion. Longitudinal waves are readily formed on a stretched spring or Slinky by alternately compressing and expanding one end.
This type of traveling wave is called a longitudinal wave. Sound waves are longitudinal waves.
Wave characteristics. Important basic characteristics of waves are wavelength, amplitude, period, and frequency. Wavelength is the length of the repeating wave shape. Amplitude is the maximum displacement of the particles of the medium, which is determined by the energy of the wave.
If two waves pass through the same region of space, they combine by a process called superposition. The superposition principle is that the resultant wave formed by the simultaneous influence of two or more waves is the vector sum of the displacements due to each wave acting independently. As shown in Figure (a), if two pulses of the same size and shape on the same side of the rope arrive at a given point at the same time, they will—for an instant—combine to form a pulse that is twice the size of each of the individual pulses. This is called constructive interference. Figure 3 (b) shows what happens if the same two pulses are on opposite sides of the string. In this case, the two pulses will momentarily cancel each other out. This is called destructive interference.
Standing waves are produced by the superposition of these similar but inverted pulses that are traveling in opposite directions.
The easiest wave to visualize is a water wave. When a pebble is dropped in a calm pool of water, ripples travel out from the point where the pebble enters the water. The disturbance travels out from the center of the pattern, but the water does not travel with the wave. Mechanical waves—such as water waves, waves on a rope, waves in a spring, ...
Energy is transmitted from place to place, but the medium does not travel between two places. For the sake of simplicity, idealized one‐dimensional waves on a rope and two‐dimensional water surface waves with no friction‐like forces provide the wave model.