| Term | Definition |
| landforms | A recognizable, naturally formed feature on the Earth's surface. Landforms have a characteristic shape and can include such large features as plains, plateaus, mountains, and valleys, as well as smaller features such as hills, eskers, and canyons. |
| relief | the differences in elevation and slope between the higher and lower parts of the land surface of a given area. |
| elevation | the altitude of a place above sea level or ground level |
| sea level | the horizontal plane or level corresponding to the surface of the sea at mean level between high and low tide |
| contour maps | a topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface. |
| contour lines | A line on a map joining points of equal elevation above a given level, usually mean sea level. The change in elevation between one contour line and the next is the contour interval. |
| contour interval | any of the spaces between vertical lines on a topographic map or globe; the difference in elevation such an interval represents |
| color to show elevation | uses color to show elevation example:pink=5,000 ft. |
| three-dimensional maps | help students because they touch,helps show elevation |