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Chp 2 MOWorld

vocab earth science map of world

QuestionAnswer
the science of mapmaking cartography
circles Earth halfway between the north and south poles; separates Earth into two equal halves called the northern and southern hemispheres equator
Distance in degrees north or south of the equator; equator serves as reference point (0 degrees latitude); Runs HORIZONTAL. latitude
distance in degrees east or west of the prime meridian (represents 0 degrees longitude); vertical; north-south; also called semicircles or meridians longitude
24 time zones; each 15 degrees wide; time zones
180 degrees meridian; serves as the transition line for calendar days; West-gain a day; East-lose a day; International Date Line
distance of a location above or below sea level elevation
show the hills, valleys, mountains, rivers, forests and bridges in an area; use lines, symbols and colors to represent changes in elevation/features topographic map
connects points of equal elevation; never cross contour lines
difference in elevation between two side-by-side contour lines contour interval
numbers that mark the elevation of a contour line index contours
Contour line with hachures. Used to mark features such as volcanic craters and mines lower than the surrounding landscape depression contour lines
explains what the symbols on maps represent map legend
the ratio between distances on a map and the actual distances on the surface of Earth; 3 types: verbal, graphic, and fractional map scale
expresses distance as a statement; Ex: "one centimeter is equal to one kilometer," means that one centimeter on the map is equal to one kilometer on Earth's surface verbal scale
consists of a line that represents a certain distance; line broken down into sections, with each section representing a distance graphic scale
expresses distance as a ratio; Ex: 1:63 500, means that one unit on the map represents 63, 500 units on Earth's surface fractional scale
the arrangement of electromagnetic radiation according to wavelengths fractional scale
the arrangement of electromagnetic radiation according to wavelengths electromagnetic spectrum
Detects visible and infrared (heat) wavelengths of energy emitted by Earth's surface; used to study the movements of Earth's plates, rivers, forest fires, earthquakes, and pollution Landsat satellite
Radar sent from satellite and bounced off the top of the ocean. Used to map features on the ocean floor, to study tidal changes, and global ocean currents Topex/Poseidon satellite
a navigational system involving satellites and computers that can determine the exact position (latitude, longitude & elevation) of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver GPS: Global Positioning System
located on a ship and bounces sonar (sound waves) off the ocean bottom to calculate the distance to the ocean bottom and map the ocean floor Sea Beam
Created by: woodardjennifer
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