A | B |
deposition | the process by which sediment settles out of the water or wind that is carrying it, and is deposited in a new location |
earthquake | the shaking that results from the movement of rock beneath Earth's surface |
epicenter | the point on Earth's surface directly above the focus of an earthquake |
erosion | the process by which water, ice, wind, or gravity moves fragments of rock and soil |
extrusive rock | igneous rock that forms from lava on Earth's surface |
fault | a break or crack in Earth's lithosphere along which rocks move |
fold | a bend in rock that forms where part of Earth's crust is compressed |
geyser | a type of hot spring that builds up pressure underground and erupts at regular intervals as a fountain of water and steam |
intrusive rock | igneous rock that forms when magma hardens beneath Earth's surface |
lava | liquid magma that reaches the surface; also the rock formed when liquid lava hardens |
magnitude | the measurement of an Earthquake's strength based on seismic waves and movement along faults |
sediment | small solid particles of material from rocks or organsims which are moved by water or wind resulting in erosion and deposition |
seismic waves | a vibration that travels through Earth carrying the energy released during an earthquake |
seismograph | a device that records ground movements caused by seismic as they move through Earth |
volcano | a vent or fissure in the Earth's surface through which magma and gases are expelled |