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MST4.I.PS5.2e:
A machine can be made more efficient by reducing friction. Some common ways of reducing friction include lubricating or waxing surfaces.
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Students will understand and apply scientific concepts, principles, and theories pertaining to the physical setting and living environment and recognize the historical development of ideas in science.
Intermediate
Physical Setting
Energy and matter interact through forces that result in changes in motion.
Students observe, describe, and compare effects of forces (gravity, electric current, and magnetism) on the motion of objects.
A machine can be made more efficient by reducing friction. Some common ways of reducing friction include lubricating or waxing surfaces.
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