In this machines worksheet, students review different types of simple machines including pulleys, wedges, levers, and inclined planes. This worksheet has 10 matching, 4 multiple choice, and 8 short answer questions.
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Why Don't Perpetual Motion Machines Ever Work?
It turns out that some laws were definitely not meant to be broken! A short illustrative video explains why the first and second laws of thermodynamics prevent perpetual motion machines from actually moving perpetually — and why...
6 mins 6th - 12th Science CCSS: Adaptable