Conceptual Physics Alive: Heat Transfer

Conceptual Physics Alive: Heat Transfer includes a digital video and questions set with answers. Conduction is related to many everyday examples and is demonstrated by boiling water under a variety of conditions. Convection is shown with a pressure cooker. Radiation is related to Newton's law of cooling. Segment length: 45 minutes Heat Transfer Includes: Hewitt begins by heating a metal ring with a torch to see the effect on the hole size. The hole gets larger, which answers the homework (Next-Time Question) of the previous lecture. Chalkboard explanation is given of the increase in hole size. Demonstration of heating a bimetallic strip. Its application is the thermostat. The wooden handle of the bimetallic strip and poor heat conduction. Conductors and the presence of loose electrons about atomic nuclei. Wood is a poor conductor at any temperature, whether in a hot oven or as red-hot coals. Walking barefoot on red hot coals without harm is explained. The conductivity of chairs in the classroom compared by students. Demonstration of wrapped paper around a piece of iron in a hot flame Why the paper doesn't light on fire. Demonstration repeated with paper wrapped around wood. Demonstration of water in a paper cup held in the flame. Demonstration of poor heat conductivity of water. An ice cube wedged at the bottom of a test tube filled with water is held in a flame, to show that the water at the top of the tube boils while the ice cube remains intact. Water's poor conductivity and the constant 4C water that remains at the bottom of deep lakes that have high-temperature surfaces. Poor conductivity of air, with examples of down-filled sleeping bags, the fur of animals, Styrofoam, spun glass, and thermal underwear. Convection, and why warm air rises. Helium atoms and their rise in the atmosphere. The expansion of rising warm air and cooling. Student demonstration of cooling by blowing on hands. Demonstration of hand in the path of expanding steam from a pressure cooker. Explanation of why air cools when it expands. Radiation. Frequency and temperature relations or radiation. Wave motion simulated by shaking an imaginary rubber tube. The greenhouse effect and its explanation. Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day. Digital format: The email you will receive will contain a hyperlink to download a .ZIP file containing a digital video (.MP4) and questions set with answers (.PDF). Notice: The Conceptual Physics Alive Digital content is protected by copyright laws. Replicating and distributing this digital content without the authority of the copyright owner is an infringement of the copyright. This digital content can be used in physical or remote classroom settings (e.g., Google Classroom, Canvas, etc.), or Homeschool.