2. WAVES
A wave is an oscillation accompanied by a transfer of
energy that travels through space or mass.
Wave motion transfers energy from one point to another.
3. WAVE MOTION
A wave motion is the propagation of disturbance
from the point of a medium to other parts of it.
4. Types of waves
A mechanical wave is just a disturbance that propagate through a medium.
The medium could be air, water, a spring, the Earth, or even people.
Example of mechanical wave: sound, water waves, earthquakes, etc.
An electro magnetic wave is simply light of a visible or invisible
wavelength. Oscillating intertwined electric and magnetic fields comprise
light. Light can travel without medium.
5. A matter wave is a term used to describe particles like electrons that
display wavelike properties.
A gravity wave is a ripple in the “fabric of space time” itself. They
are predicted by Einstein’s theory of relativity, but they’re very
difficult to detect.
6. Types of Mechanical waves
Mechanical waves need a physical medium. The particles in the medium can move in two
different ways: either perpendicular or parallel to direction of the wave itself.
In a longitudinal wave, the particles in the medium move parallel to the direction of the
wave.
In a transverse wave, the particles in the medium move perpendicular to the direction of
the wave.
A surface wave is often a combination of the two. Particles typically move in circular or
elliptical paths at the surface of the medium.
10. Longitudinal waves
A longitudinal wave is a wave in which the
particles of the medium vibrate in a direction
parallel to the direction of propagation of the
wave.
11. Examples of longitudinal waves
Sound waves
Waves in slink
Vibration in gases
Oscillation in spring
Tsunami waves
12. Characteristics of transverse waves
a) Wave length: It is the distance between any two
consecutive points which are in the same state of
vibration.
b) Crust: It is the elevated portion of the wave.
c) Trough: It is the depressed portion of the wave.
d) Frequency: It is the number of cycles per second
13.
Velocity of a wave
= frequency of the wave * wavelength of the wave
