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Energy and Machines
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Who built an accurate catapult?
Archimedes
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Name the six simple machines.
lever, inclined plane, pulley, wedge, screw, wheel and axle
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It has a rope, a wheel and an axle.
Pulley
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A machine used for pushing an object up or down a slope.
Inclined plane
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Machines that have few or no moving parts. There are 6.
Simple machines
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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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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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Simple machine with a fulcrum and a rigid bar.
Lever
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Who invented the phonograph?
Thomas Edison
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Isac Newton was born in the _____ century.
17th
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Who discovered the term of radioactivity?
Marie Curie
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Who discovered the polonium and radium?
Marie Curie
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Who invented the electric light bulb?
Thomas Edison
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