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18 Cards in this Set

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Geology
the study of which the earth is made out of
meteorology
the study of the changing of earths atmosphere
astronomy
the study of the motions of earth and other objects in space
Density =
Mass/Volume
Mass
the amount of matter in an object
Volume
the amount of space that an object takes up
Earth =
oblate spheroid
Litosphere
the dense solid shell of the earth. COmposed of rocks and soil
Hydrophere
consists of the water on the earth
atmosphere
the shell of gases around the earth
How fast does the earth spin?
15% per hour
Where is the North Star located?
the end of the little dipper
Field
a region that similar quantity can be measured at every point or location
Isolines
Connect points of equal value on a field map
Isobars
connect points of equal air pressure
Contour Lines
connect points of equal elevation
contour interval
the distance between two contour lines
Gradient
the rate of a change in field values between two points on a field