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36 terms

Mapping

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topography
The shape of the land determined by elevation, relief, and landforms.
elevation
Height above sea level
relief
The difference in elevation between the highest and lowest parts of an area.
landform
A feature of topography formed by the processes that shape Earth's surface.
landform region
A large area of land where the topography is similar.
plain
A landform made up of flat or gently rolling land with low relief
mountain
A landform with high elevation and high relief
mountain range
A series of mountains that have the same general shape and structure.
mountain system
Similar mountain ranges in an area make up a mountain system.
mountain belt
Mountain ranges and mountain systems in a long connected chain form a larger unit called a mountain belt.
plateau
A landform that has high elevation and a more or less level surface.
lithosphere
Earth's solid rocky outer layer.
atmosphere
The mixture of gases that surrounds Earth.
hydrosphere
Earth's oceans, rivers, lakes, and ice.
biosphere
All living things that live on, above, or under Earth's surface.
map
A model of all or part of Earth's surface as seen from above.
globe
A sphere that represents Earth's surface.
scale
Used to compare distance on a map or globe to distance on Earth's surface.
symbols
On a map, pictures used by mapmakers to stand for features on Earth's surface.
key
A list of the symbols used on a map.
equator
An imaginary line that circles Earth halfway between the North and South poles.
hemisphere
One half of the sphere that makes up Earth's surface.
prime meridian
The line that makes a half circle from the North Pole to the South Pole and that passes through Greenwich, England.
degree
A unit used to measure distances around a circle. One degree equals 1/360 of a full circle.
latitude
The distance in degrees north or south of the equator.
longitude
The distance in degrees east or west of the prime meridian.
map projection
A framework of lines that helps to show landmasses on a flat surface.
mercator projection
A type of map in which the lines of latitude and longitude all appear as straight, parallel lines that form a rectangle distorting the size and shape of the landmasses near the poles.
equal area projection
A type of map in which the map projection does not distort the size of the landmasses but there is still some distortion of shape.
satellite image
Pictures of land surface based on computer data collected from satellites.
digitizing
Converting information to numbers for use by a computer.
pixel
The tiny dots in a satellite image.
topographic map
A map that shows the surface features of an area.
contour line
A line on a topographic map that connects points of equal elevation.
contour interval
The difference in elevation from one contour line to the next.
Global positioning system
A method of finding latitude and longitude using satellites.