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Dynamic Earth

Sienna Mifsud


Outer Core molten rock generated within the earth
Inner Core of igneous rock that has solidified beneath the earth's surface
Weathering the point inside the Earth where an earthquake begins
Fold fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period
Fault a hard crystalline metamorphic rock that takes a high polish
Coal the gradual movement and formation of continents (as described by plate tectonics)
Mantle a composite rock made up of particles of varying size
Conglomerate forms when sand, mud, and pebbles at the bottom of rivers and oceans pile up and cement together
Limestone shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
Plutonic liquid rock on Earth's crust
Richter Scale plutonic igneous rock having visibly crystalline texture
Volcanic Sections of the Earth's crust that move due to convection currents.
Volcano a bend in rock that forms where part of the earth's crust is compressed.
Slate (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
Crust the process that crumbles, cracks, and breaks rocks (slow change by wind and water)
Continental Drift condition in which the earth's surface is worn away by the action of water and wind
Magma Rocks formed when other rocks are put under extreme heat and pressure
Earthquake a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
Anticline # an objective measure of the strength of an earthquake. It measures the degree of magnitude.
Metamorphic Rock A location on the surface of the Earth directly above the point(focus) where an earthquake occurs.
Granite Liquid layer below the mantle. It is probaly made of melted iron.
Seismograph a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
Lava a fine-grained metamorphic rock that can be split into thin layers
Shale Outer layer of Earth composed of tectonic plates.
Syncline a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
Sedimentary Rock igneous- very light gray to a medium gray- contains a large number of gas bubbles each surrounded by a thin layer of volcanic glass- looks something like a sponge- very light weight- most pieces will float in water- flow lines or bands may show
Basalt a mountain that forms when magma reaches the surface
Erosion rock that solidified from magma
Sandstone an upward bend or fold in a rock layer
Tectonic Plates solid, dense center of the Earth
Marble ard metamorphic rock consisting essentially of interlocking quartz crystals
Focus a hypothetical continent that (according to plate tectonic theory) broke up later into India and Australia and Africa and South America and Antarctica
Quartzite the commonest type of solidified lava
Epicentre Circular currents in the mantle caused by the magma being heated by the core off the Earth.
Gondawanaland the middle layer of the earth and is found just below the crust
Convection Currents a downward bend or fold in a rock layer
Igneous Rock a sedimentary rock formed by the deposition of successive layers of clay
Pumice igneous rock produced by eruption and solidified on or near the earth's surface

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