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17 Cards in this Set
- Front
- Back
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Latitude
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The distance north or south of the equator, measured in degrees.
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Longtitude
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The distance east or west of the prime meridian, measured in degrees.
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Contour line
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Line on a topographic map that indicates an elevation; Every point along a contour line has the same elevation.
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Contour interval
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On a topographic map, tells the distance in elevation between adjacent contour lines.
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Hypothesis
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A tentative explanation that is tested to see if it is valid or not.
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Theory
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A well tested and widely accepted view that explains certain observable facts.
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System
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Any size group of interacting parts that form a complex.
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Atomic number
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The number of protons in the nucleus of an atom.
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Atomic mass
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The weight of an atom.
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Atomic symbol
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The letters used to represent the elements on the periodic table.
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Covalent bond
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A bond that forms when atoms share electrons.
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Ionic bond
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A bond that forms between negative and positive ions.
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Metallic bond
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A bond that forms when electrons are shared by metal ions.
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Compound
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A substance formed by the chemical combination of two or more elements in definite proportions and usually having properties different from those of its constituent elements.
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Isotope
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An atom with the same number of protons but different numbers of neutrons for different element; An isotopes mass number is different from that of a given element.
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Element
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A substance that cannot be broken down into simpler substances by ordinary chemical or physical means.
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Mineral
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A naturally occurring, inorganic crystalline material with a unique chemical composition.
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