| A | B |
|---|
| symbol | color, shape, or texture used to represent something on a map |
| boundary | the limit or border of an area or region |
| key | explanation of symbols used on a map |
| model | a representation of an object or process |
| structure | something built by people, like a building |
| drainage basin | system of rivers & streams that drains an area like the Colorado Plateau |
| erosion | wears away earth materials by water, wind, or ice |
| landform | shape or feature of the earth’s surface, like a delta or canyon |
| map | drawing of an area, usually as though you were looking straight down at it. |
| cartographer | person who makes maps |
| grid | network of vertical & horizontal lines that form squares |
| canyon | v-shaped valley eroded by a river or stream |
| delta | fan-shaped (triangular) deposit of earth’s materials at a mouth of a stream |
| plateau | large, nearly level area that has been lifted above the surrounding area. |
| basin | low area in which sediments are often deposited |
| channel | course or path the water takes in a stream or river |
| deposition | process by which eroded earth materials settle out in another place |
| sediments | eroded earth materials that have been deposited |
| meander | curve or loop in a channel |
| slope | angle or slant of a stream channel or land surface |
| flood | very heavy flow of water, which is greater than the normal flow of water & goes over the stream’s normal channel |
| ridge | narrow area of high valleys between 2 valleys |
| glacier | large mass or body of moving ice |
| scale | describes the ratio between a measured distance on a map to the actual distance in the real world |
| bench mark | surveyor’s marker usually placed permanently in the ground at a known position & elevation |
| base | bottom of a mountain |
| contour line | Llne on a topographic map that connects points of equal elevation |
| contour interval | difference in elevation between contour lines |
| elevation | vertical distance or height above sea level |
| topographic map | uses contour lines to show the shape & elevation of the land’s surface |
| profile | side view or cross-section of a landform such as a mountain |
| valley | low area between higher area through which a river or stream flows |
| intermittent stream | water flowing in it only during certain times of the year |
| aerial photograph | photograph of the earth's surface taken from an airplane or spacecraft above earth |
| rapids | part of a river where water moves rapidly |
