Earths+Crust+Word+Wall

Earthquake:A natural event that occurs when huge pieces of Earth’s crust, called tectonic plates, interact with each other. Ring of Fire:The area along the edge of the Pacific Ocean where many tectonic plates meet. Fault-A gap in between tetonic plates Seismologist-A person who studies volcanoes Seismograph Seismic waves Aftershocks:Earthquakes, usually small ones, that follow major quakes. Aftershocks can continue for weeks, months, or years after the main quake. Focus- Epicenter:The point on Earth’s surface that is directly above where an earthquake started underground (called the focus or hypocenter). Surface waves P waves-are a type of elastic eave Subduction-is when one tectinoc plate goes under another Magnitude:A measure of an earthquake’s strength. The intensity of an earthquake is measured on a scale from 0 to 10. Mountain-a big land mass formed from tectonic plates Liquefaction-to meltsomething down into lquid Richter Scale-the scale used to measure earth quakes S waves-The S-wave moves as a shear or transverse wave Volcano-a come from witch lava magma and ash spew from Vents-a hole in the ground from where a volcano starts Erupts-when a volcano Dormant-a volcano that is inactive Active-a volcano that can errupt at any time Pryoclastic flow-the gasses that come out of a volcano Cinder-is a pyroclastic Pumice-a igneous rock Vulcanologist-some one who studies volcanoes Viscosity-the thickness on lava/magma