Science P1

• 80 Kilometers is the approximate depth of the lithosphere
• continental crust - type of crust that is thicker and less dense, floating on the mantle
• Plate tectonics theory - this explains the movement of Earth's tectonic plates
• There are 7 major tectonic plates in Earth's lithosphere
• Pacific plate - A tectonic plate that is moving away from the North American plate
• P waves - responsible for detection of the epicenter of an earthquake
• Volcano arcs - typically formed from the subduction of one tectonic plate beneath another
• Mountain Ranges - a geological feature is often found along or near plate margins
• Alfred Wegener - A scientist that composed the Continental Drift Theory
• P waves - A seismic waves that travels through solid and fluid
• Seafloor spreading theory - This suggest that the movement of hot materials from the mantle
• Earthquake - A shaking of the ground
• Hypocenter - this is the origin where earthquake occurs
• Surface Waves - a waves that occurs on the surface of the lithosphere
• Seismograph - An instrument that measures seismic waves
• Magnitude - The quantitative measure of the amount of energy that is released by an earthquake
• PHIVOLCS - An organization that records and monitors the earthquake
• Volcanism - process where magma escapes from Earth's interior
• Viscosity - magma's ability to flow
• Orogeny - process of mountain building
• Crater - the opening of volcano
• Volcanism - A geologic process that occurs when magma is released
• Continent - A large crustal landforms
• Plate tectonic theory - A theory; Large scale motions of Earth's lithosphere
• Convergent boundary - A boundary that is caused by collision
• Divergent boundary - a boundary that move apart from each other
• Transform plate boundary - A boundary that slide past each other
• Trench - It is a deep narrow depression of the ocean floor
• Lithosphere - the rigid part of earth consisting crust and the upper mantle
• oceanic-oceanic boundary - older and much denser plate
• oceanic continental boundary - denser oceanic crust subducts under the lighter continental crust
• convection current - results of diffirential matter; moves in a circular motion
• asthenosphere - layer of earth that lies below the lithosphere
• continental drift theory - a theory proposed by Alfred Wegener
• plate tectonic theory - formation of geological features and phenomena
• Alfred Wegener - He suggests that earth's masses were once merged
• Em Waves - transverse oscillating waves composed of electric and magnetic waves
• Gamma Rays - rays that are found at the end of the em spectrum
• Mirror - reflective surfaces made up of glass
• Law of reflection - states the angle of refelction is the same as angle of incidence