Warm Up #1 What is geology, and why is it an important field of study?

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Presentation transcript:

Warm Up #1 What is geology, and why is it an important field of study? What do you think the picture is on the right? What do you think it measures? What interval do you think this picture goes up by each line? How do you know?

Earth Structure Part 1: Topography

Topography Topography – landscape of terrain using bird’s eye view Contour Line – anything touching line = same elevation (go up by same contour interval) Close together = STEEP gradient (slope) Far apart = GRADUAL gradient (slope) Sea Level = 0 m/ft.

Topography Continued If point BETWEEN two contour lines…estimate If point is the PEAK of mountain…estimate Rivers…always flow with gravity (downward)

Drawing Topographic Profiles Profile = side-view of the land that you are looking at Plot elevation change on GRAPH Elevation and distance VERY important Lines close = steep increase/decrease Lines far = slow increase/decrease

Draw a Profile for THIS (approximate) BENCHMARK

Quick Quiz For the map on the left, the contour interval is 10m, starting at sea level. How high is Point A? Which side of the hill is the steepest? How do you know? Which two points have approx. the same elevation? How do you know?