|
The
purpose
of
this
resource
is
to
characterize
the
physical
and
chemical
properties
for
each
horizon
in
a
soil
profile.
Students
identify
the
horizons
of
a
soil
profile
at
a
soil
characterization
site,
then
measure
and
record
the
top
and
bottom
depth
for
each
horizon.
For
each
horizon,
students
describe
the
structure,
color,
consistence,
texture,
and
abundance
of
roots,
rocks,
and
carbonates.
Samples
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
record
daily
measurements
of
maximum,
minimum,
and
current
air
and
soil
temperatures
at
a
common
site.
One
temperature
probe
is
placed
inside
the
instrument
shelter
while
another
is
installed
at
a
10
cm
depth
in
the
soil.
A
digital
thermometer
is
used
to
measure
current
temperatures
as
well
as
daily
minimum
and
maximum
temperatures.
The
daily
minimum
and
maximum
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
log
soil
data
using
a
Davis
soil
moisture
and
temperature
station.
Soil
moisture
and
temperature
sensors
are
installed
at
multiple
depths
and
a
station
is
set
up
to
measure
and
record
measurements
at
15
minute
intervals.
These
measurements
are
transferred
to
your
school.s
computer
and
then
submitted
to
GLOBE
via
email
data
entry.
Gravimetric
soil
moisture
measurements
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
introduct
details
on
how
to
use
digital
soil
thermometers.
A
digital
thermometer
is
used
to
measure
current
temperatures
as
well
as
daily
minimum
and
maximum
temperatures.
One
temperature
probe
is
placed
at
a
depth
of
5
cm
in
the
soil
while
another
is
installed
at
a
50
cm
depth.
The
daily
minimum
and
maximum
temperatures
are
stored
by
the
instrument
for
a
period
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
continuously
measure
soil
and
air
temperature
at
one
site.
Students
install
four
temperature
probes;
three
are
placed
in
the
soil
at
three
different
depths
and
one
is
placed
in
an
instrument
shelter.
Students
use
a
data
logger
to
record
readings
from
the
probes
every
15
minutes.
Students
transfer
the
data
to
their
school
computers
for
analysis
and
submission
to
the
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
understand
that
variations
in
landscape
can
affect
soil
properties.
Students
investigate
variations
in
the
soils
around
their
school
to
discover
that
soil
properties
like
moisture
and
temperature
exhibit
considerable
variability
across
a
single
landscape.
They
also
identify
factors
such
as
slope,
shade,
plants,
compaction,
which
affect
the
appearance
of
soils
and
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The purpose of this resource is to determine the rate at which water soaks into the ground. Students place two cans into the soil and add water to them to a depth of at least 5 cm. Students measure and record the time it takes the water level to drop a fixed 2 - 4 cm distance. Students repeat the measurement to determine how easily water moves vertically through the soil.
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The purpose of this resource is to measure the water content of soil based on the electrical resistance of soil moisture sensors. Students install soil moisture sensors in holes that are 10 cm, 30 cm, 60 cm, and 90 cm deep. They take daily readings of soil moisture data by connecting a meter to the sensors and using a calibration curve to determine the soil water content at each depth.
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The purpose of this resource is to define a soil characterization site. The following factors are defined: location, latitude, longitude, elevation, aspect (the direction of the steepest slope across an exposed soil site) and landscape position and slope (describes the contours of the land at the soil characterization site).
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
|
The
purpose
of
this
resource
is
to
measure
near-surface
soil
temperatures.
Students
measure
soil
temperatures
at
5
cm
and
10
cm
depths
using
a
soil
thermometer.
Students
will
be
able
to
perform
a
soil
thermometer
calibration,
carry
out
soil
temperature
measurements
accurately
and
precisely
and
record
and
report
soil
temperature
data.
Students
will
be
able
to
relate
soil
temperature
measurements
to
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||||
