| A | B |
|---|
| P Waves | the first arrival at a seismograph |
| S waves | moves through the body of an object |
| continental drift | the movement in earths crust |
| earthquakes | a sudden and violent shaking of ground |
| volcano | a mountain that lava has been erupted from earths crust |
| love wave | cause horizontal shifting of the earth in an earthquake |
| magma | a mixture of molten and soilds that is found beneath the surface of earth |
| magnitude | the great size or extent of something |
| fossil | the remains or impression of a prehistoric organism |
| graph | a diagram showing the relations |
| seismogram | a record produced by a seismograph |
| latitude | the angular distance of a place north and south of the earths equator |
| longitude | the angular distance of a place east or west of the earths meridian |
| subduction boundary | a geological process that takes place at convergent boundaries |
| convergent boundary | a region of active deformation where two or more tectonic plates are near the end of their life cycle |
| divergent | a linear feature that exists between two tectonic plates that are moving away from eachother |
| slab pull | the portion of motion of a tectonic plate |
| mantle convection | the slow creeping motion of earths solid mantle |
| density | the volumetric mass |
| temperature | the degree or intensity of heat |
