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27 Cards in this Set
- Front
- Back
rock cycle
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the process in which rocks form, change, break down and reform.
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crystallization
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the process through which rocks form, either from molten rock or from coming out from solution.
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plate tectonics
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the theory that the earth's surface, lithosphere, is divided into a series of segments which moves
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atoms
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the smallest unit of an element that has the proper piece of that element.
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ions
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atoms which have lost or gained electrons
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force
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a push or a pull
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newtons three laws
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1.inertia
2. f=ma 3. action force/ reaction force |
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bouyancy
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push back force equal to the force exerted by the amount of water displaced by the object
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gravity
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the pull of object towards the center of its mass
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topography
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surface features of an area of earths continent
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contour lines
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connect points of equal elevation
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rules for a contour map
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1. contour lines never cross
2. circles show highest (hills, mountains) and lowest (basins and lakes) in a closed system 3. decreases in elevation in a depression 4. contour lines crossing a stream point toward higher elevation 5. the closer the lines the steeper the slope 6. the index lines that numbers on them 7. on a map the contour intervals are always equal |
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science process skills
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set of steps through which info. is gained and verified, including observations, hyothesis, variables, writing procedures and organized data.
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observations
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information gained using the five senses
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hypothesis
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proposed solution to a problem to be tested, based on observations and previous experience
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variable
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anything which can change in an experiment
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independent
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the one variable which is delbrately changed from one trial to another but the experimentor
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dependent
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the variable which may change in response to changes in the independent variable
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controlled variable
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those variable which must remain the same on one trial to another
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procedure
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step by step sequence for conducting and experimenting.
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data
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observations of the changes made due to manipultaion of one variable. usually recorded in an organized chart.
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quantitative
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observations involving measuements
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qualitative
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observations of what occurs. very descriptive
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types of mining
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strip mining
open pit mining deep mining surface mining |
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density
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amount of mass in a given volume of space generally written as g/ml
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4 spheres of earth
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1. atmosphere
2. hydrosphere 3. geosphere 4. boisphere |
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wieght
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the pull of gravity on the mass of an oject.
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