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Building a
Thermometer
Question
What is a thermometer?
Sketch a thermometer and briefly describe how your
thermometer works.
Build a Thermometer
• The objective of this lab is to
o
o
o
o
design,
build,
calibrate, and
test a thermometer.
• Design Plan due -------– This includes list of materials
needed. Feel free to discuss your ideas with
instructor during your planning stage.
• Lab construction – -------• Report Due
---------
Steaming
Boiling
Warm
Cold
Design Plan
Uses a unique method
that is easy to follow
and includes trouble
shooting suggestions.
Method is complete
and easy to follow
Essential steps are there One could not follow
for someone else to
this method and make
replicate
a thermometer
Documentation
of work
Description of concepts
considered in design
and recorded all
information as outlines
in “Lab Notebook”
instructions. Reports
the range of
thermometer.
Recorded all
information as outlined
in “Notebook”
instructions.
Reports the range of
thermometer
Recorded essential
information with little
detail
Sketchy documentation
Calibration of
Thermometer
Calibrates, tests, and
measures accuracy.
Calibrates with at least
3 repetitions
Provides a scale
No reliable calibration
The test!
Measure environment
specified by Instructor
within 0.1 C
Measure environment
specified by Instructor
within 1.0 C
Measure environment
specified by Instructor
within 5.0 C
Measure environment
specified by Instructor
within 10 C or not all
all
Examples
Link to video of explanation
Bimetal strip
Resistance Thermometer
Galileo Thermometer
Gas Thermometer
Liquid Crystal
Thermometer
Rubric for Report
Exemplary
POINTS
Introduction
Very Good
Needs Work
3
Clearly states the goal that
2
Good statement goal but lacks
clarity.
1
Poor statement of goal
Literature Review
Minimum one page of
background information that
explain the principles on
which your thermometer is
built. Includes principles such
as coefficient and kinetic
energy
Minimum one page of
background information that
explain the principles on which
your thermometer is built.
Doesn’t fully lay the foundation
for the design.
Materials and Methods
Complete enough to
understand how the lab is
done without getting into too
much detail. Includes method
of calibration
Can understand how the
experiment was conducted but
not clearly stated. General
calibration described
Too much detail or insufficient
detail to obtain a clear picture of
how the experiment was
conducted. Little or no calibration
information
Final Sketch or
photograph of
Thermometer
Calibration Data
Good use of results, data or
observations to explain range
and uses of your
thermometer.
% error
Calibration not replicated and
very large % error
No calibration or % error
reported.
Conclusions:
How well did your
thermometer work?
Clearly report the usefulness
of your thermometer, error
analysis, and suggestions for
improvement
Some report of the usefulness of Lack of report of usefulness of
your thermometer, error analysis, your thermometer, error analysis,
and suggestions for improvement and suggestions for improvement
POINTS
AWARDED
After Building and
Calibrating
• Students make a presentation to the class to share
their thermometer.
Assessment
• Sketch a thermometer and explain how it works.
What is Temperature?
• Now that you have built an instrument to measure
temperature, how would you define
temperature?
Temperature Basics
• Temperature of an ideal gas is directly proportional
to the average translational kinetic energy of the
molecules of gas.
• Temperature is important as it provides a way to
measure the thermal radiation of an object
Land Surface Temperature
Anomaly
Land Surface Temperature Anomaly video :
http://svs.gsfc.nasa.gov/vis/a000000/a003900/a003901/
Add GISStemperature2011_withcolorbar. Mp4 to show video within PowerPoint
What is the difference
between heat and
temperature?
Place your hand on each object on the table and
then arrange them in order of hottest to coldest.
Images: Microsoft PowerPoint Clipart
Heat (q)
• Heat (q) is the energy transfer from one object to
another.
The heat of your hand transferred to the
metal object giving you the impression that
the object is cold.
• Heat(q) = mass of substance (m) x Specific Heat of
substance (c) x the change in Temperature (T)
q=m
x
c
x
T