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Investigation Question 1:
How can wind and water affect temperature?

Preparation

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What to do

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Assessment

Preparation

Teaching and Learning Focus

In this investigation, your students will begin to develop their concept of how the interaction of moving air (wind) and water can affect heat transfer:

  • Water will evaporate more quickly when air is moving rapidly over its surface.
  • When water evaporates from a surface (such as your hand), heat is also removed from that surface.

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Materials Needed

For each student pair:

  • large glass or metal tumbler
  • water
  • container of water large enough to put a hand inside
  • battery-operated fan

For you to demonstrate to students:

  • two alcohol thermometers (can be the blank thermometers used in Investigation 2)
  • masking tape
  • absorbent cotton
  • dropper
  • glass marking pen

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Safety

This investigation is considered generally safe to do with students, but you will need to make sure that the containers they use for water are unbreakable and that you tape the thermometers securely to the wall when you do the demonstration. Please review the investigation for your specific setting, materials, students, and conventional safety precautions.

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At Utah's Vermillion Cliffs a siltstone butte of the Carmel Formation erodes and forms unusual shapes. © Michael Collier Image courtesy of the Earth Science World Image Bank, photo ID: ixvt1a

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Last updated:July 23, 2008


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