10/7/14Aim: What is a Field?

Do Now: R&H p.26, A&E #31-34

HW – Finish lab

-Field – any region of the environment where a measurement can be taken at every location.

-Field Value – whatever aspect of the field that you choose to measure. Ex. Temp, pressure, density, rainfall, snowfall, elevation, etc.

-Isolines – lines that connect points of equal field value.

-Field Map- A map made of isolines that show a pattern of data and allow us to predict any location on the map.

-Interval- the value of increase/decrease for each isoline.

Gradient- how fast change is occurring, very similar to Rate of Change.

Gradient = change in field value change in distance

•-The closer spaced your isolines are the greater the gradient between the two locations.

•-Field maps generally have energy that flows from a source (highest value) to a sink (lowest value).

Types of Isolines and Field Maps

• Isotherm- connects points of equal temperature.

• Isobar- connects points of equal air pressure.• Isoyet- connects points of equal rainfall.• Contour line- connects points of equal

elevation.

A Contour Field Map

A Temperature or Isotherm Map

10/7/11Aim: How do we make a field map?

• Do Now – Take a handout and draw the isothermal map.

• HW- Finish lab.