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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. |
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Definition
| Travel only through matter and involve the motion of particles of the matter they pass through |
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Definition
| Travel only through matter and involve the motion of particles of the matter they pass through |
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Definition
| Travel only through matter and involve the motion of particles of the matter they pass through |
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Term
| water waves and sound waves |
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Definition
| examples of mechanical waves |
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Definition
consist of varying electric and magnetic fields
can travel through matter and vaccum chamber. |
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Term
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Definition
| partivles move perpendicular to the direction in which the wave moves |
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Definition
| consists of compressions and rarefactions. Motion of individual units is along the same line that the wave travels. |
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| combination of transverse and longitudinal |
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Definition
| What kind of waves are water waves? |
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Term
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Definition
| What medians can transverse travel though? |
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| any median, fluid or solid |
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Definition
| What can longitudinal waves occur in? |
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| longitudinal because molecues in path move same direction (back and forth) in the same direction of the waves |
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Definition
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| faster through liquids, then solids, then gases |
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Definition
| where does sound travel the fastest? |
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Term
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Definition
| more energy a sound wave carries |
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Definition
| unit used to describe how powerful a sound is |
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Definition
distance from crest to crest
trough to trough |
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Definition
| rate at which crest moves |
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Definition
| number of crest that pass though waves in a certain second |
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Definition
| time needed for one complete wave (crest + trough) to pass a given point |
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Definition
| height of the crest above the undisturbed level |
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Definition
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Definition
| natural phnomena that consists of rapid vibration of rocks near surface |
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Definition
| place where crustal blocks have moved |
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Definition
| point on surface directly over the focus |
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Definition
| waves that travel through earths interior |
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Definition
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Definition
transverse.
Cannot move through liquid
push pull vibration |
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Definition
longitudinal like sound waves
cam travel through liquid and solids |
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Term
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Definition
| waves that travel along the surface |
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Term
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Definition
| transverse surface waves with vibbrations parrael to the surface |
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Definition
| surface waves taht involve orbital movements |
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Definition
| insturments that detect earthquakes |
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Definition
| where p and s waves do not exist |
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Term
| mohorovicic discontinuity |
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Definition
| the surface between outer shell and mantle below it |
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Definition
| coarset seidiment on bottom |
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Definition
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Definition
| adding together of two or more waves of the same kinds that pass through the same point at the same time. |
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Term
| constructive and destructive |
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Definition
| what are the two types of interferece |
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Term
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Definition
| _____ of waves due to slowing down on the bottom and sort of bending |
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Term
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Definition
| when waves meet an obstacle, they hit it, bounce off and reform |
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Definition
| waves ability to bend around the edge of an obstacle in their path. |
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Definition
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Definition
no hymalyas, small alantic ocean
no gynosperms |
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Term
| tropical, no ice caps at poles |
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Definition
| What was the climate during the jurrassic |
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Term
1. Triassic
2> jurassic
3. crestaceous |
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Definition
| name periods in order of the mesozoic |
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Definition
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| largest animal to ever walk the earth |
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| much wetter than triassic, contients moved apart |
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Definition
what happened to climate in jurrasic?
geogically |
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Term
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Definition
| what is the missing link between reptiles and mammals |
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Term
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Definition
| missing link between fish and amphibians |
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Term
| comet, extreme volcanic and techtonic activity |
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Definition
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Definition
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Definition
| what % of living things died out at the end of mesozoic? |
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Term
| life recovered and created a rain forest in the eocene |
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Definition
| what was the beging of the mesozoic like? |
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Definition
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Definition
| what country was the center of volcanic activity? |
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| what where largest preditors in the early eocene>? |
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Term
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Definition
| waves that are faster, longitudinal, less wasted energy |
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