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Nikita Parmar

Updated on 13th February, 2023 , 6 min read

Difference Between Transverse and Longitudinal Waves: Definitions, Examples, Key Differences, and Sample Questions

Difference Between Transverse and Longitudinal Waves Overview

Waves are a sort of disturbance that passes through a material as a result of the particles' repeated and periodic motion. Mechanical waves are classified into two types: transverse waves and longitudinal waves. The difference between transverse and longitudinal waves is that in transverse waves, the medium travels perpendicular to the direction of the wave, but in longitudinal waves, the medium moves in the same direction as the wave.

What is a Wave?

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A wave is a disturbance that moves energy from one location to another without moving matter. A typical illustration would be a stone striking the surface of the water and causing ripples that move in the shape of concentric circles with an increasing radius until they hit the pond's edge. There are several sorts of waves, two of which arelongitudinal and transverse waves.

A wave is a disturbance that propagates energy from one location to another without the actual movement of stuff. The three main types of waves are mechanical or elastic waves, electromagnetic waves, and matter waves.

Difference Between Transverse and Longitudinal Waves Definitions

Definitions of Transverse Wave

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A transverse wave is one in which the particle's movement is parallel to the direction of wave propagation. Furthermore, the transverse wave is defined by wave motion being perpendicular to particle motion. Furthermore, transverse waves require a very hard medium to carry their energy. Transverse waves include radio waves and water waves. A transverse wave is formed by the waves in a string. Peaks and troughs are characteristics of transverse waves. The crest, or top point, of the wave, is the peak, while the trough is the valley, or bottom point, of the wave. Standing waves are formed by a string.

Transverse waves are commonly observed in elastic substances. Furthermore, the oscillations in this situation cause the solid particles to be displaced away from their site of relaxation, in the direction perpendicular to the wave's propagation. 

Definitions of Longitudinal Wave

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In longitudinal waves, particles transmit energy from one location to another by vibrating in the wave's propagation direction. The movement of particles in longitudinal waves is normally parallel to the movement of energy. In this case, the particles are also moved parallel to the path of the traveling wave. By pushing and pulling the slinky horizontally, we may create a longitudinal wave. A longitudinal wave is one in which the movement of the particle is parallel to the direction of wave propagation. Furthermore, longitudinal waves are defined by wave motion being parallel to particle motion. Furthermore, compare it to a standing wave along a transversal, such as a string on an oscillating guitar. Furthermore, longitudinal sound waves in solids have a wave and velocity impedance.

Difference Between Transverse and Longitudinal Waves Examples

Transverse Wave Examples

The following are some of the examples of transverse waves-

  1. A Mexican Wave in a Sports Stadium.
  2. Electromagnetic Waves (light waves, microwaves, radio waves).
  3. Ripples on the Surface of Water.
  4. Seismic S-waves.
  5. Vibrations in a Guitar String.

Transverse Wave Examples

The following are some of the examples of longitudinal waves-

  1. Seismic P-Waves
  2. Sound Waves
  3. Ultrasound Waves

Difference Between Transverse and Longitudinal Waves

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The following table gives detailed information about the difference between transverse and  longitudinal waves- 

Parameter

Transverse Wave

Longitudinal Wave

Example

The earthquake S wave is an example of a transverse wave.

The earthquake P wave is an example of a longitudinal wave.

Movement 

In the case of a transverse wave, the medium flows perpendicular to the wave direction.

In the case of a longitudinal wave, the medium travels in the same direction as the wave.

Constitution

This wave consists of crests and troughs.

Compressions and rarefactions make up this wave.

Polarization or alignment

This wave's polarization or alignment is undoubtedly plausible.

This wave's polarisation or alignment does not occur.

Production Medium

This wave can only be created in liquid and gaseous mediums.

This wave may be created in any material, whether solid, gaseous, or liquid.

Dimension

This wave has a two-dimensional action.

This wave only operates in one dimension.

Key Differences Between Transverse and Longitudinal Waves

The following are some of the key differences between transverse and longitudinal waves- 

  1. Longitudinal waves alter density across the medium, but transverse waves do not.
  2. Longitudinal waves can travel through solids, liquids, and gases, whereas transverse waves can only travel through solid and liquid surfaces.
  3. Longitudinal waves compress and are rare, but transverse waves have a peak and a trough.
  4. The medium moves in a unique way. The medium goes left to right in the longitudinal wave, whereas it moves vertically up and down in the transverse wave
  5. Pressure varies in longitudinal waves but not in transverse waves.

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Points to Remember

  1. A longitudinal wave is one in which the medium particles travel in the same direction as the wave.
  2. A transverse wave is one in which the particles of the medium travel perpendicular to the wave's movement.
  3. A wave is formed when a stone impacts the surface of the water, causing ripples that flow in the shape of concentric circles.
  4. The longitudinal wave has only one action dimension.
  5. Natural disasters such as earthquakes can create both transverse and longitudinal waves that travel across the Earth.
  6. Only longitudinal waves could pass into the Earth's core, according to seismologists.
  7. There are two action dimensions to transverse waves.

Sample Questions for Difference Between Transverse and Longitudinal Waves 

Sample Question 1- What causes sound waves to form? 

Sound waves are created by particle velocity, particle movement, and pressure vibrations.

Sample Question 2- Will shock waves in water be longitudinal or transverse if an explosion occurs at the bottom of a lake or sea?

When an explosion occurs at the bottom of a lake or sea, it causes a massive surge in water pressure. A shock wave is a longitudinal wave that travels faster than an ordinary wave.

Sample Question 3- The x-axis is traversed by a transverse wave. Which way must the medium's particles move?

The particles of the medium must travel in the y-z plane or the plane perpendicular to the x-axis.

Sample Question 4- Name three different types of waves.

The three main types of waves are mechanical or elastic waves, electromagnetic waves, and matter waves.

Sample Question 5- What exactly is a transverse wave?

A transverse wave is one in which the particle movement is parallel to the direction of wave propagation. Furthermore, wave motion perpendicular to particle motion defines the transverse wave. Transverse waves must transport their energy via an extremely hard material.

Sample Question 6-  Why can't transverse waves be generated in the air?

The modulus of stiffness of air is 0, and it also lacks the attribute of possession. As a result, transverse waves cannot be formed.

Sample Question 7- Explain why solids can sustain both longitudinal and transverse waves while gases can only support longitudinal waves.

Solids have a shear modulus, which allows them to withstand shearing force. Because fluids have no particular form, shearing tension is produced. Transverse waves propagate in such a way that shearing stress is created in the material. Transverse wave propagation is only feasible in solids, not in gases. The bulk moduli of solids and fluids are the same. They are capable of withstanding compressive stress. As a result, longitudinal waves may travel through solids and fluids.

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Frequently Asked Questions

Ans. Longitudinal waves are mechanical waves that require a medium to propagate, whereas transverse waves are non-mechanical waves that do not. Longitudinal waves are made up of compressions and rarefactions, whereas transverse waves are made up of crests and troughs.

Ans. Transverse electromagnetic waves, including radio waves, are ubiquitous.

Ans. A longitudinal wave is made up of a periodic disturbance or vibration that occurs in the same direction as the wave’s progress. As they vibrate back and forth, a sound wave flowing through the air compresses and rarefies the gas in the direction of the wave’s movement.

Ans. Light waves are transverse, but sound waves are longitudinal.

Ans. Transverse waves do not need a medium to travel. A transverse wave is something like an electromagnetic wave.

Ans. Sound waves are produced as a result of particle velocity, particle displacement, and pressure vibrations.

Ans. Dimension is one distinction between longitudinal and transverse waves. Furthermore, the longitudinal wave is a one-dimensional wave. The transverse wave, on the other hand, operates in two dimensions.

Ans. The motion of all points on a wave oscillates along pathways at right angles to the direction of the wave’s progress in transverse waves. Transverse waves include water ripples, seismic waves, and electromagnetic waves, such as radio and light waves.

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