At mean sea level the elevation of a land feature is zero.ģ Contour lines show changes in elevation. ![]() Elevation is calculated by choosing a point halfway between the highest and lowest ocean tide levels. This is also referred to as the mean sea level. Elevation is the height of a land feature above sea level. They want to know about the shape, size, and elevation of its land features. This is why topographic maps are very useful.Ģ Earth scientists, such as geographers and cartographers, want to know about the Earth's surface. Map projections and globes do not give scientists detailed information about our planet's surface. ![]() Topography is the size and shape of natural and human-made land features. For topography maps, the contour lines are the key to understanding this map's special language. The political maps have boundary lines, capital stars, and major cities. The road maps have lines for streets, routes, and highways. High interest, readability grades 9 to 10Ĭlosed-loop, isograms, understanding, reliefs, topography, perpendicular, human-made, cartographers, sunken, suburban, contour, http, interval, urban, political, additionġ Every map has its own special language. ![]() Print Language of Topography Reading Comprehension Worksheets and No Prep Teaching Resources
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