As we go through the power point, please do the following:  Match your cards.  Take notes in your science notebook.  Label your map. topographyThe study…

The study of the shapes and features of the Earth’s surface.

Shows the three dimensional shape and elevations of an area of land in two dimensions

Height above sea level

Line that connects places on a topographic map that are all at the same elevation (eventually a closed loop) Label the contour lines on your map. Contour line

The vertical difference in elevation between neighboring contour lines Label the contour line interval on your map. contour line interval

The difference between the highest elevation point and the lowest elevation point on a map Units = feet What is the relief of this map? What is the contour interval of this map?

 Contour lines are closely spaced on steep slopes.  Contour lines are widely spaced on gentle slopes.

Where a contour line crosses a stream or valley, the contour line bends to form a “V” that points upstream. In the upstream direction, the successive contours represent higher elevations.

 Contour lines near the top of a hill form closed, circular shapes. The top of the hill is higher than the highest closed contour line.

 Depressions without outlets are shown by closed hatched contours. The contour lines have short lines on the inside that are pointing down slope. The bottom of the depression is lower than the lowest closed contour line.

A map made of pictures of the Earth taken from a satellite orbiting the Earth.