chapter 8-10 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
| Question | Answer |
| earthquake | movements of the ground due to sudden release of energy |
| focus | point in earth's interior where the earthquake occurred |
| seismic waves | waves of energy released by an earth quake |
| epicenter | point on earth's surface directly above the focus |
| elastic rebound | sudden return of deformed rock back to undeformed shape |
| body waves | seismic waves that move through the inside (body) of earth |
| p waves | push-pull body waves |
| s waves | side-to-side body waves |
| surface waves | seismic waves that move on earth's surface |
| seismograph | all seismic waves are recorded on a |
| seismogram | pen traces vibrations onto a moving drum of a paper to create a |
| richter scale | numerical scale based on height of the largest seismic wave |
| moment magnitude scale | only useful for small, shallow quakes |
| modified mercalli scale | roman number scale that measure the intesity created by an earthquake |
| liquefaction | where soil and rock are saturated with water, earthquakes |
| tsunami | is a wave formed when the ocean floor shifts suddenly during an earthquake |
| seismic gap | an area along a fault where there has not been any earthquake activity for a long period of time |
| crust | thin, rocky outer layer of earths is divided into oceanic and continental |
| mantle | over 82% of earths volume is contained in the mantle a solid, rocky shell that extends to depth of 2890 kilometers |
| outer core | layer beneath the mantle about 2260 kilometers thick, liquid iron and generates earths magnetic field |
| inner core | are compressed into a solid state by the immense pressure |
| moho | is the boundary separating the crust from the mantle, discernible by an increase in the the velocity of seismic waves |
| ring of fire | volcano belt that rims the pacific ocean |
| hot spot | volcanic areas far from plate boundaries |
| viscosity | a measure of fluids resistance to flow |
| vent | an opening in the surface of earth through which molten rock and gasses and released |
| pyroclastic material | the volcanic rock ejected during an eruption including ash bombs and blocks |
| volcano | opening that allows magma to escape to the surface |
| crater | the depression at the summit of a volcano or that which is produced by a meteorite impact |
| shield volcano | a broad gently sloping volcano built from fluid basaltic lavas |
| cinder cone | a small volcano built primarily of pyroclastic material ejected from a single vent |
| composite volcano | composed of and pyroclastic both lava flows material |
| caldera | large depression typically caused by collapes or ejection of the summit area of a volcano |
| lahar | mudflow made up of water-soaked volcanic ash and rock |
| plution | intrusive igneous structure that results from the cooling and hardening of magma beneath the surface of earth |
| sill | igneous body formed when magma is injected along sedimentary bedding surfaces |
| laccolith | a massive igneous body intruded between preexisting strata |
| dike | tabular-shaped intrusive igneous feature that occurs when magma is injected into fractures in the surrounding rocks, cutting across preexisting rock layers |
| batholith | a large mass of igneous rock that formed when magma intruded at depth, became crystallized, and subsequently was exposed by erosion |
Created by:
2007903
Popular Earth Science sets