Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



What are waves? Properties of Waves Interactions of Waves Seismic Waves

Ashley Gremillion

on 6 April 2010

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Waves

What are Waves?
material through which a wave travels
mechanical wave
waves that require a medium through which to travel
electromagnetic wave
waves that can travel without a medium
gases, liquids, solids
produced when a source of energy causes a medium to vibrate
types of mechanical waves
waves that move at right angles to the direction in which the waves travel
the high part of a transverse wave
the low part of a transverse wave
a disturbance that transfers energy from place to place
move the medium parallel to the direction in which the waves travel
where the matter is close together
parts where the matter is spread out or rarified
Properties of Waves
basic properties
the maximum distance that the particles of the medium carrying to wave move away from their rest position
in transverse waves
maximum distance the medium moves up or down from its rest position
in longitudinal waves
measure of how compressed or rarefied the medium becomes
find by measuring the distance from the rest position to the crest or trough
dense compressions = large amplitude
the distance between 2 corresponding parts of a wave
can measure distance from crest to crest or trough to trough
the number of complete waves that pass a given point in a certain amount of time
measured in:
hertz (Hz)
1 wave per second = 1 Hz
how far the wave travels in a given length of time
speed = wavelength x frequency
frequency = speed / wavelength
wavelength = speed / frequency
Interactions of Waves
when an object or a wave hits a surface through which is cannot pass, it bounces back
bending of two waves due to a change in speed
when a wave enters a new medium at an angle, one side of the wave, changes speed before the other side, causing the wave to bend
bending only occurs when the wave enters the medium at an angle
examples: rainbow, see a fish under the water
when a wave moves around a barrier or through an opening in a barrier, it bends and spreads out
interaction between waves that meet
constructive interference
when waves combine to make a wave with a larger amplitude
destructive interference
two waves combine to make a wave with a smaller amplitude
Seismic Waves
waves produced by earthquakes
P waves, S waves, or surface waves
primary waves
longitudinal seismic waves
move faster than the other seismic waves and end up at distant points before the other types
compressions and rarefactions of rock inside the Earth
compress and expand the ground like a slinky
secondary waves
transverse seismic waves
shake the ground up and down and side to side as it moves through it
cannot travel through liquids
therefore, do not travel directly through the earth like P waves
Earth's core is...
combination of a longitudinal wave and a transverse wave that travels along the surface of a medium
move slower that P and S waves but cause the most severe ground movement
combine up and down and side to side motion, making the ground roll like ocean waves
huge surface waves on the ocean
caused from earthquakes underwater
the waves add upon each other as they reach shallow water
detecting seismic waves
records the ground movements cause by seismic waves as they move through earth
placed at different locations around the world so when there is an earthquake...
P waves arrive before S waves
scientists measure the time between P and S waves and can tell how far away the earthquake was
Full transcript