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The Planet Earth and

Science Key Words

TermDefinition
Metamorphic Rock A type of rock which has been charged by extreme heat or pressure.
A Year The time taken by earth to make one revolution around the sun which takes the period of 365 days
Weathering Wear away or change the appearance or texture of something by long exposure to the atmosphere.
Water Cycle The cycle of process by which water circulates between the earth's oceans, atmosphere and land.
Sedimentary Rock Rock that has formed through the deposition and solid faction of sediment, especially sedimentary transported by water eg. lakes, ice or wind.
Pseudo-Science A collection of beliefs or practices mistakenly regarded as being based on scientific methods.
Plate Tectonics A theory explaining the structure of the earths crust and many associated phenomena.
Orbit The regular repeated elliptical course of a celestial object or spacecraft around a star or planet.
Mnemonic A system such as a pattern of letters, ideas or associations which assists in remembering something.
Magma Hot fluid of semi-fluid material below or within the earths rust from which lava and other igneous rock is formed on cooling.
Igneous Rock Is formed through the cooling and solidification of magma or lava.
Biosphere The region of the surface and atmosphere of the earth or another planet occupied by living organisms.
Geosphere Any of the almost spherical concentric region of the earth and it's atmosphere especially the lithosphere.
Astronomy The branch of science which deals with the celestial objects, space and the physical universe as a whole/
Fossil Fuel A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.
Incident Ray An incident ray of light that strikes a surface eg. a rare view mirror
Constellation A group of stars in a recognizable pattern that is traditionally named after it's apparent form or identified with a mythological figure.
Lunar Eclipse An eclipse in which the moon appears darkened as it passes into the earth's shadow.
Hydrosphere All the waters on earth's surface, such as oceans, lakes and sometimes clouds.
Atmosphere The envelope of gasses surrounding earth or another planet.
Acid Rain Rainfall made so acidic that in causes environmental harm. The main cause is the industrial burning of coal and other fossil fuel.
Gondwanaland A vast continental area which is believed to have existed in the southern hemisphere and to have resulted from the break u of Pangaea and Mesozoic.
Created by: lucy1
 

 



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