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31 Cards in this Set

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