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English 11 Public

4th Grade Questions on Energy and Machines

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Work using energy of motion (movement) and have few or no moving parts. There are 6.

simple machines

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Name the six simple machines.

lever, inclined plane, pulley, wedge, screw, wheel and axle

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A rigid bar placed on a support called a fulcrum. It is used for pushing an object up or down.

lever

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It is made up of a flat, slanting surface and is used for moving objects up and down different levels.

inclined plane

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It has a rope, a wheel and an axle. It is used for lifting and lowering objects

pulley

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Who studied how objects travel through air and built an accurate catapult?

Archimedes

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Who developed a theory to explain the source of gravity?

Isaac Newton

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Who invented a type of reflective telescope in the 17th century?

Isaac Newton

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Which Archimedes invention was a type of crane with a hook that could lift a ship out of water?

The Claw

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Which Archimedes invention lifted water from a water source and is used today in machinery for oil extraction?

Archimedes' screw

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Who devised 3 laws of motion still used in mechanical engineering today?

Isaac Newton

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