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31 Cards in this Set
- Front
- Back
theory
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a hypothesis that has been tested many times and that is supported by evidence
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Topographic map
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a map that contour lines to show elevation and other surface land features
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observation
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an examination of some part of nature
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model
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a representation of an object
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contour interval
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the difference in elevation between one contour line and the next
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contour line
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connects points on a map that are the same elevation
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longitude
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distance east or west of the prime meridian
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experiment
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a test of a hypothesis
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equal-area projection
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a map projection that shows land and sea areas in their true shapes and relative sizes
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rotation
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the turning of an object on its axis
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equator
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an imaginary line that circles the earth halfway between the North and South poles
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latitude
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distance north or south of the equator (parallel to the equator)
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scientific method
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the way that scientists gather info and test ideas about nature
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hydrosphere
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a layer of water that covers the earth
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astronomical unit
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a unit of length that is equal to the average distance from the sun to the earth
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atmosphere
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a layer of air that surrounds the earth
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light-year
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a unit equal to the distance light can travel in one year
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lithosphere
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the solid surface of the earth
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revolution
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the movement of an object along an orbit, around another body
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Mercator projection
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a map projection that shows the earth's grid, or system of lines, as straight lines
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autumnal equinox
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a point in the sky through which the sun passes on the first day of fall in the Northern Hemisphere
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summer solstice
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a point in the sky in which the sun passes through on the first day of summer in the Northern Hemisphere
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winter solstice
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a point in the sky through which the sun passes on the first day of winter in the Northern Hemisphere
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science
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a way of obtaining knowledge aboout nature
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vernal equinox
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a point in the sky through which the sun passes on the first day of spring in the Northern Hemisphere
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earth science
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a branch of science that studies the earth and space
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map
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a model of the earth's surface
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technology
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the use of knowledge from science in an attempt to improve the quality of human life
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map projection
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a way of transferring the curved surface of the earth onto a flat map
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hypothesis
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a proposed answer to a question that is being investigated
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conclusion
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states whether or not the evidence supports the hypothesis
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