Lesson 3/Practice Exercise
PRACTICE EXERCISE FOR LESSON 3
Instructions
Check your understanding of Lesson 3 by completing the practice exercise. There is only one correct
answer to each question. Try to answer all of the questions without referring to the lesson materials.
When you have completed all of the questions, turn the page and check your answers against the correct
responses. Each correct response is referenced to specific portions of the lesson material so that you can
review any questions you have missed or do not understand, before continuing to the next lesson.
1.
When performing a deliberate soils survey, there are three phases: an on- site evaluation, a study
of existing information, and a
a.
study of the vegetation.
b.
subsurface investigation.
c.
taking of some disturbed samples.
d.
a gathering of local intelligence.
2.
Aerial photographs are an excellent source of information when making a site selection. List
three of the types of information which aid in soils identification.
a.
__________.
b.
__________.
c.
__________.
3.
The most common method of manually digging test holes is to use the
a.
CBR mold
b.
pick and shovel
c.
hand auger
d.
spoon
4.
What is a soil profile?
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
5.
Soils engineers obtain information from areas which expose the substrata. List three areas where
the substrata is exposed.
a.
__________.
b.
__________.
c.
__________.
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