Characteristics of Waves

Learning Target(s):

Students can identify & describe parts of waves. Students can calculate wave speed

VOCABULARY

crest- the highest point of a wave.

trough- the lowest point of a wave.

amplitude- the maximum distance that the particles of a wave’s medium vibrate from their rest position.

wavelength- the distance from any point on a wave to an identical point on the next wave.

period- the time required for one full wavelength of a wave to pass a certain point.

frequency- the number of full wavelengths that pass a point in a given time interval.

Doppler effect-an observed change in the frequency of a wave when the source or observer is moving.

When a plane is moving toward you, the frequency is higher and the sound has a higher pitch. When the plane is moving away from you, the sound has a lower frequency.

This picture shows the lables of the names of what wave contains. wavelength is the measurement from one wave side to next nearest one. Crest is the highest point of the wave. Trought is the lowest point of the wave. And lastly amplitude is the change over a period.

How is speed of mechanical wave affected?

The wave speed depends on the frequency. If it travels faster then the low frequency then theyre going to be going at diffrent speeds which changes the shape and form.

How is speed of electromagentic wave affected?

If the wave enters a new medium it will change to either faster or slower.But f it doesnt enter a new medium it will stay the same. Or if it reenters the medium it had left.

Speed wave formula Ws = F x WL

(Hz) & (m)

EX: A frequency of 50 Hz & a wavelength of 20 cm find speed of wave.

Ws=f x wl Ws= 50 x 20= 1,000 1.0 x 10^3 m/s.

EX: 250Hz x 6.0m = 1,500= 1.5 x 10^3 m/s

this video is about the four characteristics of waves. There are so many different movements and forces that can fall under under as waves. which means a wave is an iscolation trasnfering engery without matter.