of Earth Science |Northeastern
Objectives #9 (September 25,
the end of today's class, you
should be able to do the following:
v Water Flow and Water Table
v Properties of Porous Materials
what makes water flow.
v Hydraulic Head
- Define the following terms, using appropriate units of
conductivity and permeability.
- Characterize rocks and sediments in terms of their
hydraulic conductivity and permeability,
giving typical ranges of values of these properties for each type of
rock and sediment.
- Explain the difference between hydraulic conductivity and
the term hydraulic head
and describe its two components.
the effect hydraulic head has on the flow of water.
Reminder: Exam #1 is on Oct. 4 (one
week from Thursday).
Discuss what makes
water flow and how that relates to the concept of hydraulic head.
Determine the hydraulic head at various points in a cross section
illustrating a shallow ground water system. (Click
here to get the worksheet.)
v Water Flow--Lab Explorations, continued:
Debrief the "Darcy
Discovery" exploration we did last time.
v Properties of Porous Materials: Define these properties of porous
materials: hydraulic conductivity
and permeability. Explain the difference between them.
Write formulas to express
each quantity. Give a typical range of values for each property
in various rocks and sediments.
Measuring Hydraulic Conductivity and
Permeability: In new groups (see Homework #3),
devise a new protocol
for measuring hydraulic conductivity. Using that protocol,
measure the hydraulic conductivity of three samples of sediments, and
write a lab report as per the instructions given on the homework
© 2007 Laura L.
Last updated September 25, 2007.