Contour maps show the following: The elevation of the land above sea level. “A bird’s eye view!
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Transcript of Contour maps show the following: The elevation of the land above sea level. “A bird’s eye view!
TOPOGRAPHIC MAP: KEY CONCEPTS
TOPOGRAPHIC MAP: KEY CONCEPTS
Contour maps show the following:
•The elevation of the land above sea level.
“A bird’s eye view!
RULES OF CONTOUR LINES
The connect points that are at the same elevation
They never cross or touch
They are imaginary lines
They always connect and form a circle
PARTS OF A TOPOGRAPHIC MAP
BENCHMARK:
A benchmark is a place on a map where exact elevation is known. It is marked BM on a map.
PARTS OF A TOPOGRAPHIC MAP
MAP SCALE
A map scale shows the distance on a map in relation to Earth.
PARTS OF A TOPOGRAPHIC MAP
MAP LEGEND
A map legend explains the symbols used on a map.
OTHER KEY CONCEPTS
CONTOUR INTERVAL
A contour interval is the difference in elevation between two contour lines.
OTHER KEY CONCEPTS
When lines are close together, they represent a steep slope.
When lines are spread apart, they represent a gradual slope.
WHAT DO THEY MEAN?
Dark Contour Lines:
WHAT DO THEY MEAN?
Hachure Lines:
WHAT DO THEY MEAN?
Blue Lines/Shapes:
WHAT DO THEY MEAN?
Brown Lines:
WHAT DO THEY MEAN?
Black Lines/Shapes:
WHAT DO THEY MEAN?
Green:
WHAT DO THEY MEAN?
Red
DID YOU KNOW?
Contour lines that cross water form a “V” that points UPSTREAM!