Fill a cup one-third full of dry sand that is
at room temperature. Place the end of the thermometer in the sand and record
the temperature (Temperature one). The thermometer should be in the middle
of the sand when measuring the temperature. Now invert the second cup over
the first cup. Seal by wrapping a piece of tape around the seam between
the two cups. Be sure that the cups are secured tightly with tape before
shaking them. The cups should be held at their junction in case the tape
starts to weaken. Shake the sand back and forth inside the cups for five
minutes. Punch a hole in the top of one of the cups. Insert the thermometer
through the hole into the sand. Be careful to hold the thermometer at the
end - not in the middle. Be careful when inserting the thermometer into
the sand. Never use mercury thermometers!! Always use alcohol thermometers.
Record the temperature again (Temperature Two).
