# Properties of Waves

Edited by Jamie (ScienceAid Editor), Taylor (ScienceAid Editor)

## About Waves

Above is a displacement / distance graph showing a wave. It is labeled with some key terms.

### Parts of a Wave

- 1The amplitude is the height of the wave from 0 displacement (normal) to the peak at its highest point.
**AMPLITUDE**.Advertisement - 2The Wavelength
**WAVELENGTH**.**is the distance from the start to the second point the wave passes 0. i.e. a complete wave.** - 3On a displacement/time graph, the period would be equivalent to the time of the wavelength. The
**PERIOD**.**frequency**is 1 / period and measured in Hz (1Hz = 1wave per second).

### The Wave Equation

Have a look at the examples using this equation, below. A loudspeaker reproduces a note of frequency 320Hz. It travels through the air at the speed of 340ms-1.

**A.** What is the wavelength in air?
l = v/f
l = 340ms-1 / 320Hz
l = 1.06m

**B.** The sound passes through water where its wavelength is 4.5m.
Calculate the speed of sound in water
V = fl
V = 320Hz x 4.5m *(frequency doesn't change)*
V = 1,440ms-1

### Types of Waves

There are two basic types of wave. They are

- 1
- 2The oscillations/vibrations are along the line of travel. These are mechanical waves because it actually moves particles. E.g. sound waves.
**Longitudinal Wave**.Advertisement

- If you have problems with any of these steps, ask a question for more help, or post in the comments section below.

## Comments

## Article Info

Categories : Waves

Recent edits by: Jamie (ScienceAid Editor)