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Wave motion and behavior
Chapter 6-Mr. Drake
59
Geology
05/01/2007

Term
 Wave
Definition
 a periodic disturbance- back and forth change of some kind that is repeated reguarly as time goes on- that spreads out from a source and carries energy with it.
Term
 mechanical waves
Definition
 Travel only through matter and involve the motion of particles of the matter they pass through
Term
 mechanical waves
Definition
 Travel only through matter and involve the motion of particles of the matter they pass through
Term
 mechanical waves
Definition
 Travel only through matter and involve the motion of particles of the matter they pass through
Term
 water waves and sound waves
Definition
 examples of mechanical waves
Term
 electromagnetic waves
Definition
 consist of varying electric and magnetic fields can travel through matter and vaccum chamber.
Term
 transverse
Definition
 partivles move perpendicular to the direction in which the wave moves
Term
 longitudinal waves
Definition
 consists of compressions and rarefactions. Motion of individual units is along the same line that the wave travels.
Term
 combination of transverse and longitudinal
Definition
 What kind of waves are water waves?
Term
 only through solids
Definition
 What medians can transverse travel though?
Term
 any median, fluid or solid
Definition
 What can longitudinal waves occur in?
Term
 longitudinal because molecues in path move same direction (back and forth) in the same direction of the waves
Definition
 what are sound waves?
Term
 faster through liquids, then solids, then gases
Definition
 where does sound travel the fastest?
Term
 the louder the sound
Definition
 more energy a sound wave carries
Term
 decibel
Definition
 unit used to describe how powerful a sound is
Term
 wavelength
Definition
 distance from crest to cresttrough to trough
Term
 speed
Definition
 rate at which crest moves
Term
 frequency
Definition
 number of crest that pass though waves in a certain second
Term
 period
Definition
 time needed for one complete wave (crest + trough) to pass a given point
Term
 amplitude
Definition
 height of the crest above the undisturbed level
Term
 infrasound
Definition
 waves below 20Hz
Term
 ultrasound
Definition
 waves above 20,000 Hz
Term
 earthquake
Definition
 natural phnomena that consists of rapid vibration of rocks near surface
Term
 focus
Definition
 place where crustal blocks have moved
Term
 epicenter
Definition
 point on surface directly over the focus
Term
 body waves
Definition
 waves that travel through earths interior
Term
 P wavesand S Waves
Definition
 2 examples of body waves
Term
 s waves
Definition
 transverse.Cannot move through liquidpush pull vibration
Term
 p waves
Definition
 longitudinal like sound wavescam travel through liquid and solids
Term
 surface waves
Definition
 waves that travel along the surface
Term
 love waves
Definition
 transverse surface waves with vibbrations parrael to the surface
Term
 rayleigh
Definition
 surface waves taht involve orbital movements
Term
 seismographs
Definition
 insturments that detect earthquakes
Term
Definition
 where p and s waves do not exist
Term
 mohorovicic discontinuity
Definition
 the surface between outer shell and mantle below it
Term
 trangressing
Definition
 coarset seidiment on bottom
Term
 regressing
Definition
 finest rock on bottom
Term
 interference
Definition
 adding together of two or more waves of the same kinds that pass through the same point at the same time.
Term
 constructive and destructive
Definition
 what are the two types of interferece
Term
 refraction
Definition
 _____ of waves due to slowing down on the bottom and sort of bending
Term
 reflection
Definition
 when waves meet an obstacle, they hit it, bounce off and reform
Term
 diffraction
Definition
 waves ability to bend around the edge of an obstacle in their path.
Term
 mesozoic
Definition
 65 million years ago
Term
 crustaceous
Definition
 no hymalyas, small alantic oceanno gynosperms
Term
 tropical, no ice caps at poles
Definition
 What was the climate during the jurrassic
Term
 1. Triassic2> jurassic3. crestaceous
Definition
 name periods in order of the mesozoic
Term
 mostly desserts
Definition
 climate in triassic
Term
 sauropods
Definition
 largest animal to ever walk the earth
Term
 much wetter than triassic, contients moved apart
Definition
 what happened to climate in jurrasic? geogically
Term
 cynodont
Definition
 what is the missing link between reptiles and mammals
Term
 lungfish
Definition
 missing link between fish and amphibians
Term
 comet, extreme volcanic and techtonic activity
Definition
 what ended mesozoic
Term
 yucatan penn. in Mexico
Definition
 where did coment hit?
Term
 65%
Definition
 what % of living things died out at the end of mesozoic?
Term
 life recovered and created a rain forest in the eocene
Definition
 what was the beging of the mesozoic like?
Term
 eocene
Definition
 first epoch in cenozoic
Term
 germany
Definition
 what country was the center of volcanic activity?
Term
 birds
Definition
 what where largest preditors in the early eocene>?
Term
 p waves
Definition
 waves that are faster, longitudinal, less wasted energy
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