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27 Cards in this Set
- Front
- Back
rock cycle
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the process in which rocks form, change, and breakdown
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crystallization
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the process through which rocks form, either from molten rock or coming out of 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 move
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atoms
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the smallest unit of an element that has the properties 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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Newton's three laws
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1. inertia
2. f=ma 3. action force/reaction force |
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buoyancy
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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 an object towards the center of its mass
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topography
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surface features of an area of earth's 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 and lowest 3. hachurre lines show decreases in elevation in adepression 4. contour lines crossing a stream point to higher elevations 5. the closer the contour lines the steeper the slope 6. index lines have numbers on them 7. contour interval is always the same |
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science process skills
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set of "steps" through which info. is gained and verified, including observations, hypothesis, variables, writing procedures, organized data.
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observation
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info. 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 expierience
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variables
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anything which can change in an expieriment
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independent variable
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the one variable which is deliberately changed from one trial to another by the expierimenter.
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dependent variable
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variable which may change in response to changes in the independent variable
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controlled (constant) variable
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those variables which must remain the same from one trial to another.
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procedure
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step by step sequence for conducting an expieriment
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data
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observations of the changes made due to the manipulation of one variable. they are usually recorded in an organized chart.
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quantitative
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observations involving measurements
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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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1. strip mining
2. open pit mining 3. deep mining 4. surface mining |
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density
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the amount of mass in a given volume of space
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four spheres of earth
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1. atmosphere
2. hydrosphere 3. geosphere 4. biosphere |
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weight
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the pull of gravity on the mass of an object
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