EvCC PHYS 122 - Water - a slight exception to the rule

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PowerPoint PresentationSlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Week 3 1Week 3 2When a glass jar lid is stuck, it often helps to run it under hot water. Use the data below to explain why this works.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 3 3Water: a slight exception to the ruleQuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 3 4QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.EarthTitan: Saturn’s largest moonEuropa: a moon of JupiterWeek 3 5Week 3 6The Electromagnetic SpectrumWeek 3 7Think of a unique example of a situation for each of the following. For each one, specify the source and receiver of heat energy transfer.• Heating by conduction• Cooling by conduction• Heating by convection• Cooling by convection• Heating by radiation• Cooling by radiationTHINK ABOUT IT:Week 3 8Week 3 9Which feels cooler to the touch: a room-temperature steel martini shaker or a room-temperature diamond-crusted mobile phone?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 3 10Which emits more electromagnetic radiation: you or the desk?(Assume both objects have an emissivity of ~1.0)Week 3 11What determines which mechanism is used for heat transfer?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.The SunWeek 3 12Week 3 13• To examine the dependence of heat energy transfer between two objects on the difference in temperature between the objects.• To explore what other factors influence the rate of heat energy transfer by conduction and convection.• To examine what types of materials are good conductors of heat energy.• To explore the transfer of heat energy by emission and absorption of radiation.LAB 3 OBJECTIVES:Week 3 14There are many varieties of windows you can buy for your home. The “top of the line” are triple-pane windows with gaps between the panes filled with Argon gas. What types of heat energy transfer cause your house to lose heat through the windows?Why are triple pane windows the better than single or double?Why are the windows filled with Argon gas?QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Week 3 15Which freezes faster: hot water or cold water?Use the concepts covered in Lab 3 to explain your answer.QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.Note: this is a complicated question. A consistent answer is more important than an accurate one in this case.Week 3


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EvCC PHYS 122 - Water - a slight exception to the rule

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