This Arts and Crafts quiz is called 'Moving Parts' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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Moving parts are those parts in a machine that are not fixed, and they can seem to make products come alive. There are different systems which make parts move - diggers can use pneumatic or hydraulic systems, a pulley is used to lift heavy weights, and cams can change a circular motion into an up and down one. Machines comprise both moving and fixed parts. There are many moving parts in a car which enable us to drive it.
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