1. FIELD VALUE
A field value -
There are two types 1) scalar and 2) vector.
Scalar field values –
(how much – amount)
Examples – t p e
Vector field values –
\Examples – w g
Field Value Maps – isotherm
isobar
contour (topographic)

2. Field values are plotted on a map according to the location that the measurement was taken.
Field values that are –
See page 22 (fig 2-7)
Field values can change over time.
See reference table – gradient formula
Gradient=

3. TOPOGRAPHIC CONTOUR MAPS
See review book page 24 Callister Quadrangle
You must be able to answer the following !!!!!
Name of the location
Latitude /Longitude
Map Scale -
Map direction * = true north, MN =
Symbols
Benchmark (BM “X”) is the recorded elevation of that area at the time of placement.
Depression
Romano Swamp and Lerose Sink
8) Contour Interval –

4. What is the elevation of an area?
Where is the steepest gradient?
The steepest gradient occurs –
Where is the most gentle gradient?
The gentle gradient is -
What is the gradient of the Brigitte River from the 200 foot contour line to
the contour line before the Brigitte River meets the Newburgh River?
Direction of Stream / River flow ?
Streams and rivers flow from an area of –
The contour -
Profile -
Read review book page 26 and study fig 2-9 on how to construct a
profile.