Fields+and+Isolines

What is a field? A felid is a region of space that has measurable quantity at every point A Felid map is used to represent any quantity that varies in a region of space Examples: Temperature Pressure Precipitation

Isolines: Lines on a map that connects points of equal value Isotherms- Lines of Equal teperature Isobars-Lines of equal pressure Contour lines- Lines of equal elevation Energy source- Refion of the highest energy value in a felid Energy Sink-Region of the lowest energy value in a felid //**Energy always flows from an energy source to an energy sink** // Dynamic field- A field which can change <span style="font-family: 'Comic Sans MS',cursive;">Static Field- A field which remains the same

<span style="font-family: 'Comic Sans MS',cursive;">How to draw Isolines: <span style="font-family: 'Comic Sans MS',cursive;">1) Isolines connect points of equal value <span style="font-family: 'Comic Sans MS',cursive;">2) Values of one side of an isoline are lower, while all values to the other side are higher. <span style="font-family: 'Comic Sans MS',cursive;">3) Isolines never cross one another <span style="font-family: 'Comic Sans MS',cursive;">4)Isolines may from closed loops <span style="font-family: 'Comic Sans MS',cursive;">5) Isolines never end so they should be drawn to the edge of the map, unless they form a loop <span style="font-family: 'Comic Sans MS',cursive;">6) Isolines tend to parallel one another <span style="font-family: 'Comic Sans MS',cursive;">7) Isolines are curved and/or smooth with no shape turns or conners <span style="font-family: 'Comic Sans MS',cursive;">8) Isolines are drawn according to a designated isoline interval (on a topographic map, this is called the contour interval) <span style="font-family: 'Comic Sans MS',cursive;">9) Isolines should always be drawn in pencil first to allow for Revisions.

Gradient The rate at which a felild value changes over distance Gradient= __Change in felid value__ Change in distance