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Earths surface
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| Question | Answer |
|---|---|
| Topography | A map that shows the surface features of an area |
| 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 Earths surfaces |
| 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 group of mountains that closely related in shape structure area and age |
| plateau | A large landform that has high elevation and a more or less level surface |
| landform region | A large area of land where the tropography is made up mainly of one type of landform |
| globe | A sphere the represents Earths entire surface |
| map | A flat model of all part of earths surface as sceen from above |
| map projection | A framework of lines that help to transfer points on Earths surface onto a flat map |
| symbol | On a map a picture used by mapmakers to stand for features on Earths surface |
| key | A list of the symbols used on a map and their meanings |
| scale | used to relate distance on a map or globe to distance earths surface |
| degree | A unit used to measure distance around a circle one degree equals 1/360 of a full circle |
| equator | An imaginary line that circles the earth halfway between the North and South poles |
| hemisphere | One half of the sphere that makes up Earths surface |
| prime meridian | The line that makes a half circle from the North Pole to the south pole that passes through Greenwich England |
| latitude | The distance in degrees north or south of the equator |
| longitude | The distance in degrees east or east of the prime merdidian |
| Surveying | The process of gathering data for a map by using instruments and principles of geometry to determine distance and elevations |
| digitizing | Converting information to numbers for use by a computer |
| pixel | One bit a digitized image often appearing as a small square or dot |
| aerial photograph | A photograph taken by cameras mounted airplanes |
| satellite image | A picture of the land surface based on computer data collected from satellites |
| Global Positioning System | A navigation system that uses satellite signals to locate a radio receiver on Earths surface |
| Geographic Information System | A system of computer hardware and software used to produce interactive maps |
| Topographic map | A map that shows the surface features of an area |
| contour line | A line topographic map that connects points of equal elevation |
| contour interval | the difference in elevation from one contour line to the next |
| index contour | On a topographic map a heavier contour line during a geologically short period |
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user-1975341