Geologic Geometry (Leaving Cert DCG): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Definition of contour
Definition of contour
Line on a map connecting points of equal elevation above sea level
How steep slopes appear on contour maps
How steep slopes appear on contour maps
Contours are closely spaced together
Contour interval meaning
Contour interval meaning
Vertical distance between consecutive contour lines
Grid layout method purpose
Grid layout method purpose
Systematic surveying technique to create contour maps
Common grid square size in surveying
Common grid square size in surveying
10m × 10m squares
Interpolation in contour mapping
Interpolation in contour mapping
Estimating where contour lines are drawn between grid points
First step in interpolation process
First step in interpolation process
Identify elevation difference between adjacent grid points
Purpose of templates in interpolation
Purpose of templates in interpolation
Divide lines into equal parts for accurate proportional division
How valleys appear on contour maps
How valleys appear on contour maps
Contours point uphill in a V-shape
Effect of smaller grid squares
Effect of smaller grid squares
More detailed elevation data but require more time and effort