Question

Define wave and its kind?

Answer 1

A wave is a transfer of energy, usually through a form of matter called a medium. For example, the energy provided by the kids at play travels through the medium of the parachute. There are also waves that don't travel through any medium at all, called electromagnetic waves, which are waves like radio waves and microwaves.
Waves can be classified into three types:
Mechanical wavesElectromagnetic wavesMatter waves.Mechanical Waves act as the propagation of a disturbance through a material medium due to the repeated periodic motion of the particles of the medium about their mean positions, the disturbance being handed over from one particle to the next.

Electromagnetic Waves are the disturbance, which does not require any material medium for its propagation and can travel even through vacuum. They are caused due to varying electric and magnetic fields.

Matter Waves are the waves produced in electrons and particles.
hope it helps you.

Answer 2

A wave is a transfer of energy, usually through a form of matter called a medium

Types of waves:

1)Longitudinal waves - Movement of the particles are parallel to the motion of the energy.  Sound waves moving through the air is an example of this type of wave.

2)Transverse waves - movement of the particles are at right angles (perpendicular) to the motion of the energy. Movement of a wave through a solid object like a stretched rope or a trampoline is an example of this type of wave.

3)Surface waves - particles travel in a circular motion.  These waves occur at interfaces.  Examples include waves in the ocean and ripples in a cup of water.