waves

Question 1

wave

Answer 1

A wave is a disturbance that travels in a medium transferring energy and momentum from one place to another without the flow of matter

Question 2

progressive waves

Answer 2

waves which move energy from place to place due to vibrations or oscillations without transferring matter.
egs are longitudinal waves and transverse waves

Question 3

Transverse waves

Answer 3

Is one in which the direction of the wave is at right angle to the direction of the energy transfer.
egs electromagnetic waves
seismic s waves
waves on the surface of water

Question 4

longitudinal waves

Answer 4

Is one in which the direction of the wave is parallel to the direction of the energy transfer.
egs sound waves
seismic p waves

Question 5

compressions

Answer 5

compressions are that part of a longitudinal wave where
- the particles of the medium are closer than they normally are
- it is a high pressure region
- there is a momentary decrease in the volume of the medium.

Question 6

rarefaction

Answer 6

that part of a longitudinal wave in which
- the particles of the medium are farther apart than that in normal position
-there is a momentary increase in the volume of of the medium
it is a low pressure region

Question 7

crests

Answer 7

These are particles which are highly raised above the equilibrium position of the particles

Question 8

troughs

Answer 8

These are particles that are greatly depressed below the equilibrium position of the particles

Question 9

displacement

Answer 9

It is the distance moved by a point on a wave from the mean position.

Question 10

amplitude

Answer 10

It is the max distance moved by a point on a wave from the mean position.

Question 11

wavelength

Answer 11

It is the distance between two consecutive points in phase such as two consecutive crests or troughs

Question 12

Time period

Answer 12

It is the time taken for any particle to undergo a complete oscillation.