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Earth's Vocabulary

QuestionAnswer
Epicenter- point on Earth's surface directly above an earthquake's focus.
Fault- Fracture that occurs when break and that results in relative movement of opposing sides;can form as a result of compression (reverse fault), being pulled apart (normal fault), or shear(strike-slip fault).
Focus- point deep inside Earth where energy is released, causing an earthquake.
Lava- molten rock flowing onto Earth's surface.
Lithosphere- rigid layer of Earth about 100 km thick made of the crust and a part of the upper mantle.
Magnitude- a measure of the energy released by an earthquake.
Rifts- long crack, fissure, or through that forms between tectonic plates moving apart at plate boundaries.
Seismic Safe- describes the ability of struct to stand up against the vibrations caused by an earthquake.
Seismic Waves- earthquake waves, including primary waves, secondary waves, and surface waves.
Surface Waves- are the slowest and largest of the seismic waves, and they cause most of the destruction during an earthquake.
Seismograph(also P and S waves)- instrument used to record seismic waves.
Tsunami- Powerful seismic sea wave that begins over an ocean-floor earthquake, can reach 30 min height when approaching land, and can cause destruction in coastal areas.
Volcanoes- cone-shaped hill or mountain formed when hot magma, solids, and gas erupt onto Earth's surface through a vent.
Pyroclastic flow- are another hazard for inhaloitants of Monstarrat.
Richter Scale- used of seisemetor.
Created by: Jennyanimelover
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