Temperature Profiles on Earth
Building a "Temperature Profile"
Objective: to build a temperature profile
mast like the one on the Mars Pathfinder lander.
Directions for building the mast:
- Cut the 1.5 meter PVC pipe into three sections.
- The bottom section, that will be attached to the base, should be 36
- The middle section should be 22.5 cm long.
- The top section will be 50 cm long.
- Glue the bottom (36 cm) section into a hole drilled through the base.
- Attach a T-joint to the top of the bottom section.
- Attach the middle (22.5 cm) section onto the top of the T-joint.
- Attach a T-joint to the top of the middle section.
- Attach the top (50 cm) section onto the top of the T-joint.
- Attach the three remaining 34 cm pipes (horizontally) to the T-joints.
- Attach the 34 cm PVC pipes (horizontally) to the T-joints.
- Make 3 thermometer holder assemblies (otherwise known as "radiation
- Put a hole in the middle of each of the paper plates large enough to
fit a thermometer.
- In three of the plates, put two holes on opposite sides of the plate
and attach a string to either side, the long end of the string needs to
come out the bottom of the plate.
- Cut your dowel or straw into 2 cm long pieces. You will need twenty-four
of these, eight per set of three plates.
- Make a stack of three plates using the dowels (or straws) so the plates
have a 1.5-2 cm gap between them. Glue 4 of the dowels/straws to the plate
with the string attached, on the top of the plate. Glue the bottom of another
plate to the 4 dowels/straws. Glue 4 more dowels/straws to the top of the
second plate. Glue the bottom of the third plate to these dowels.
- Place the thermometer in the plate assembly so the tip hangs down half
way between the middle and bottom plates.
- Attach the thermometer/plate assembly to the mast.
- Tie an assembly to the lowest cross-bar so the tip of the thermometer
is 0.25 meters above the ground.
- Tie an assembly to the middle cross-bar so the tip of the thermometer
is 0.50 meters above the ground
- Tie an assembly to the highest cross-bar so the tip of the thermometer
is 1.00 meters above the ground
© 1998 Live
from Earth and Mars, Janet Charnley, Rich Edgerton, and Janice DeCosmo