עמוד:34

3 . The following three charts describe the amounts of the pendulum's different types of energy . a . What is the pendulum’s position according to each of the charts ? ( You may express this either in words or using a drawing ) . Explain . b . What remains constant in each of the positions ? How is this seen in the chart ? 4 . Return to the Energy of an Elastic Spring simulation . a . Observe the column chart . How does it represent the law of conservation of energy ? b . Observe the pie diagram . How does it represent the law of conservation of energy ? c . In your opinion , which chart is more suitable for representing the process – the column chart or the pie chart ? Explain . Heat and the Law of Conservation of Energy Rub your hands together ; you must have felt them warming up . If you rub a piece of wood with sandpaper , you will also feel the heat . Electrical energy also transforms into heat , for example , when electrical energy passes through the heating element of a kettle .

מטח : המרכז לטכנולוגיה חינוכית


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