Energy (Pell)

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Energy (Pell)

  1. 1. Energy and its many forms In this unit we are learning about different types of energy: Kinetic energy Potential energy HeatThis poster covers a lab about heat and phase transitionsUnderstanding Energy is a major component of the NYS PhysicsStandards for high school studentsEdwin PellEmail: edpell3@gmail.comMarch 20, 2012
  2. 2. Lab GoalsObserve what effects removing energy from a liquid has: Temperature Global structure changes, liquid versus solid Specific energy and changes in specific energy Thinking about the ways heat energy is stored: Vibrational Rotational TranslationalLiterature researchWriting on research findings
  3. 3. This experiment uses a beaker of water in a bowl of dry iceData is gathered with an electronic temperature probe Data is stored and graphed on a laptop computer
  4. 4. Here is what the students first seeIt should be familiar from previous knowledge
  5. 5. Next the students see this resultThis is new and unknown to the students, they now have apuzzle to researchSome may choose to end the experiment here
  6. 6. Back to familiar territory, but why has the specific heatchanged?
  7. 7. More weirdness, why cant it be simple like in the textbook?Students must ponder what is causing the curved approachto -40 degrees.
  8. 8. After the student has done research in the literature onphase changes the lab writeup is doneThe format for the writeup is:TitleMethodVariablesDataCalculationsResults and what Caused themSummaryFor this lab the causes part will require writing at lengthabout literature research results.
  9. 9. This unit started with large scale macroscopic examples ofkinetic energy like sledding down hill. In this later lab we areexploring microscopic kinetic energy of molecules to storeenergy in the form of heat.We have moved from the concrete to the abstract.

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