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science words
Question | Answer |
---|---|
continental drift | The hypothesis tha all the continets slowly move across the earth surface |
deposition | the by which sediment settles out of water or wind carrying it. |
earthquake | the shacking that results from the movment of rock beneath earths surface |
erosion | The destructive process which water or wind loosen and carry away fragments of rock |
fault | A break in the earth's crust where slabs of rockslip past each other |
fossil | A trof an ancient organism that has been preserved in rock |
geology | The study of planet earth |
igneous rock | A type of rock that forms at the cooling ofmolten rock at or below the surface |
lava | Liqid magma that reachesthe surface; also therock formed whenliqid lava hardens |
magma | The molten mixture of rock-forming substances,gases and water from the mantle |
metamorphic rock | A type of rock that forms from an existing rock that is changed by heat,pressure or chemi cal reactions |
mineral | a naturally occuring, ignoric solid that has crystal structure and definate chemical composition |
Pangaea | The name of single of a single landmass that broke apart 200 million years ago and gave rise to earth continets today |
plate tectonics | The theory that pieces of earth's lithosphere are in constant motion driven by convection current in the mantle |
Richter scale | A scale that mesures seismic waves as neasured by a pparticular type of mechanical seismograph |
volcano | a weak spot in the earths surface where magma has come to the surface |
glacier | an extended mass of ice formed from snow falling and accumulating over the years and moving very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of accumulation, as in continental glaciers. |
hydrosphere | the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. |
humus | the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth. |
lithosphere | a rigid layer made up of the uppermost part of the mantle and crust |
permeable | capable of being permeated |
soil | the portion of the earth's surface consisting of disintegrated rock and humus |
weathering | material used as a weather strip. |