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Exploring Thermal Conductivity: The Impact of Material on Ice Melting Rates

This practical learning activity allows students to investigate how different materials affect the melting rate of ice. Participants will generate and evaluate scientific arguments, using observations to support their claims. Through hands-on experiments with metal and plastic blocks, students will explore the principles of thermal conduction, energy transfer, and temperature differences. They will predict outcomes, observe results, and write scientific explanations, reinforcing their understanding of energy transfer in solids. Further questions challenge students to think critically about thermal conductivity and its implications.

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Exploring Thermal Conductivity: The Impact of Material on Ice Melting Rates

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Presentation Transcript

  1. Practical Work for Learning Melting ice

  2. Learning outcomes • generate and evaluate scientific arguments • present a scientific argument using words and diagrams • describe how energy is transferred through a solid conductor from higher to lower temperature • apply ideas about energy transfer by thermal conduction in unfamiliar situations.

  3. Comparing the two blocks: plastic and metal

  4. Predict • Which ice cube will melt first? • Why? • Why does ice melt? • Why might one ice cube melt more quickly than the other?

  5. Observe • Describe what you saw happen • Are the results what you predicted?

  6. Explain • Write a scientific explanation of what you saw happening. • Use these terms in your explanation: • temperature • energy • conduction • Extension: why does metal feel colder to touch than plastic?

  7. Melting Ice Watch video

  8. Diagram of energy flow into ice

  9. Diagram of energy flow out of finger

  10. Further Questions • Ice melts more quickly on a metal block than on a plastic one. Would the result be different if ice cubes were placed in a metal box and a plastic box, so that they were completely enclosed? • You are supplied with samples of several different materials. How could you adapt this experiment to put them in order, from best conductor to worst conductor? • Why do some materials feel warmer to the touch than others?

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