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Investigation Question 1:
How can we put things in a sequence by how hot they are?
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Preparation
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Teaching and Learning Focus
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To introduce students to ideas about temperature, they first need to
realize that liquids and gases can be warmer or cooler in different situations.
This first investigation question is designed to help your students understand
that air and water can exist at different temperatures.
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Materials Needed
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- 3 foam drink cups marked A, B and C large enough to put hands in -
each should contain water at the different temperatures shown below:
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Cup A
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Water slightly warmer than body temperature, about
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100 °F/38 °C
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Cup B
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Cold water at a temperature of about
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45 °F/7 °C
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Cup C
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Water that is at or near room temperature
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72 °F/22 °C
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- A fourth drink cup marked D, with water that is not as hot as cup
A, but also not the same as cup B or C
- Blank alcohol thermometers (These are available from several science
supply catalogs. See, for instance, Sciencekit.
Alternatively, you could detach thermometer bulb/tubes from their measurement
scales).
- Regular alcohol thermometers calibrated in °F and °C
- Paper towels
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Safety
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This investigation question is considered generally safe to do with students.
You should check that the heated water is not too hot to handle. Please
review the investigation for your specific setting, materials, students,
and conventional safety precautions.
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