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theory that states that there was a supercontinent that split into the continents of today
(plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period ~ 300 mya, when it split into Laurasia and Gondwanaland (LOL GONDWANALAND)
the study of large scale movement and deformation of the earth's outer layers in terms of rigid plates over a partly molten layer of the upper mantle
A circular movement in a liquid that carries heat from one place to another. In the earth it occurs in the mantle.
sea floor spreading
the theory that states that the sea floor moves apart and then at mid ocean ridges and causes continents to move, is evidence for continental drif
This is the result of a continental-continental collision. The Himalaya Mountains are a good example of this.
sharp, jagged mountains made of huge, tilted blocks of rock that are separated form surrounding rock by faults and form because of the pulling forces
Magma pushes up through the ground molten rock then cools and hardens creating this kind of mountains
states that as tectonic plates move relative to each other, elastic strain energy builds up along their edges in the rocks along fault planes. Since fault planes are not usually very smooth, great amounts of energy can be stored (if the rock is strong enough) as movement is restricted due to interlock along the fault. When the shearing stresses induced in the rocks on the fault planes exceed the shear strength of the rock, an earthquake occurs
a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
Small mountains with steep sides that blow cinders and rock particles into the air when they erupt.
scalding avalanche of ash and hot, toxic expanding gas, traveling very fast down the flank of a volcano
(geology) the mechanical process of wearing or grinding something down (as by particles washing over it)
the decompocition and disintegration of rocks and minerals at the earth's surface by a mechanical and chemical process
the process of physically breaking down rock. For example, plant growth can split rock apart
CO2+H20 -> CH2O3 (Carbonic Acid). water reacts with minerals in rocks and breaks them down.
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