Machines that have few or no moving parts. There are 6.
Simple machines
Name the six simple machines.
lever, inclined plane, pulley, wedge, screw, wheel and axle
A machine used for pushing an object up or down a slope.
Inclined plane
Simple machine with a fulcrum and a rigid bar.
Lever
It has a rope, a wheel and an axle.
Pulley
Who developed a theory to explain the source of gravity?
Isaac Newton
Who built an accurate catapult?
Archimedes
Who invented a type of reflective telescope in the 17th century?
Isaac Newton
Which Archimedes invention was a type of crane with a hook that could lift a ship out of water?
The Claw
Who invented the electric light bulb?
Thomas Edison
Who discovered the polonium and radium?
Marie Curie
Who discovered the term of radioactivity?
Marie Curie
Who invented the phonograph?
Thomas Edison
Isac Newton was born in the _____ century.
17th
