Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
chapter8 and 10 voca
| Term | Definition |
|---|---|
| earthquake | the vibration of earth produced by the rapid release of energy |
| focus | the point within earth were an earthquake originates |
| seismic waves | shakes waves perpendicular to the direction the wave is traveling |
| epicenter | the location on earths surface directly above the focus or orgin of an earth quake |
| elastic rebound | tendency for deformed rock along a fault to spring back to its original shape after an earthquake. |
| body waves | A body wave is a seismic wave that moves through the interior of the earth, as opposed to surface waves that travel near the earth's surface. P and S waves are body waves. Each type of wave shakes the ground in different ways. |
| p waves | earthquake wave that pushes and pulls rocks into direction of the wave also known as a compression wave |
| s waves | a seismic wave that shakes particles perpendicular to the direction the wave is traveling |
| surface waves | a wave that travels along the surface of earth |
| seismograph | an instrument that records seismic waves |
| seismogram | the record made by a seismograph |
| richter scale | The Richter magnitude scale assigns a magnitude number to quantify the size of an earthquake. |
| moment magnitude scale | a more precise measure of earthquake magnitude than a richter scale |
| modified mercalli scale | he effect of an earthquake on the Earth's surface is called the intensity. |
| liquefaction | describes a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress |
| tsunami | A tsunami or tidal wave, also known as a seismic sea wave, is a series of waves in a water body caused by the displacement of a large volume of water |
| seismic gap | is a segment of an active fault known to produce significant earthquakes that has not slipped in an unusually long time |
| crust | he outer layer of the Earth, between the surface and the mantle |
| mantle | is the part of the earth between the core and the the crust |
| outer core | he outer core of the Earth is a fluid layer about 2,300 km (1,400 mi) thick and composed of mostly iron and nickel that lies above Earth's solid inner core |
| inner core | s the Earth's innermost part. It is primarily a solid ball with a radius of about 1,220 kilometres |
| moho | he discontinuity between the crust and the mantle of the earth, occurring at depths that average about 22 miles |
| ring of fire | is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. |
| hot spot | A place deep within the Earth where hot magma rises to just underneath the surface, |
| visocity | s a measure of the resistance of a fluid to deformation under shear stress. It is commonly perceived as "thickness", or resistance to pouring |
| vent | an opening, as in a wall, serving as an outlet for air, smoke, fumes, or the like. 2. an opening at the earth's surface from which volcanic material, as lava, steam, or gas, is emitted. |
| pyroclastic material | composed chiefly of rock fragments of explosive origin, especially those associated with explosive volcanic eruptions |
| volcano | a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust. |
| crater | a large, bowl-shaped cavity in the ground or on the surface of a planet or the moon, typically one caused by an explosion or the impact of a meteorite |
| sheild valcano | a broad, domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava. |
| cinder cone | A steep, conical hill consisting of glassy volcanic fragments that accumulate around and downwind from a volcanic vent |
| composite valcanoe | built up by many layers (strata) of hardened lava, tephra, pumice, and volcanic ash. |
| caldera | a large volcanic crater, typically one formed by a major eruption leading to the collapse of the mouth of the volcano. |
| lahar | a destructive mudflow on the slopes of a volcano. |
| pluton | a body of intrusive igneous rock. |
| sill | a shelf or slab of stone, wood, or metal at the foot of a window or doorway. |
| laccolith | a mass of igneous rock, typically lens-shaped, that has been intruded between rock strata causing uplift in the shape of a dome. |
| dike | a long wall or embankment built to prevent flooding from the sea. |
| batholith | a very large igneous intrusion extending deep in the earth's crust. |
Created by:
2007451
Popular Earth Science sets