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33 Cards in this Set
- Front
- Back
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Which occurred when the temperature of earth went beyond the melting point of the iron |
Iron catastrophe |
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The seafloor on either side of the ridge spreads away from the crest of the ridge, until it sank into the deep oceanic trenches |
subduction |
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Unifies the concept of continental drift, seafloor spreading and magnetic field reversals and other geological and geophysical discoveries |
plate tectonics |
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a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. |
tectonic plate |
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Occurs when two tectonic plates move away from each other |
divergent boundary |
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where two plates move towards each other |
convergent boundary |
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two plates slide past each other |
transform boundary |
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continental- continental collision |
mountains |
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continental- oceanic |
trench or valley |
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can be replenished or regenerated on a human time scale |
renewable resource |
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cannot be replenished or regenerated on a human time scale |
non renewable resource |
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a form of energy which can be generated from almost any energy source |
electricity |
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a black combustible rock made up of elemental carbon, hydrogen,oxygen, nitrogen and varying amounts of sulfur |
Coal |
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It is naturally occurring liquid composed of complex hydrocarbons and is found in geological formation underneath earth's surface |
petroleum |
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occur when atoms of one species of chemical element are transformed into atoms of another species by nuclear change |
Nuclear reactions |
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splitting of heavy atoms into lighter atoms |
fission |
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combination of two light atoms to form a heavier atoms |
fusion |
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Both fission and fusion create heat energy |
nuclear energy |
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Energy from the sun |
solar energy |
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energy from the earth's heat |
Geothermal energy |
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energy from burning organic or living matter |
biomass |
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energy from the flow of water |
hydroelectric |
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The downward movement of water through soil |
infiltration |
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dissolving of materials and organic matter in upper layers carrying them to lower layers |
leaching |
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O horizon |
leaf litter |
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A horizon |
top soil |
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E horizon |
eluviation zone |
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B horizon |
subsoil |
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C horizon |
parent material |
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The rate of change in temperature with depth |
geothermal gradient |
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the living skin of earth which is a result of dynamic interaction among the atmosphere, biosphere, geosphere and the hydrosphere |
Pedosphere |
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what are the 5 soil factors? |
Parent material, climate , time , topography , biological factors |
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The ideal soil for agricultural use |
loam |
