click below
click below
Normal Size Small Size show me how
simple machines
pulley,lever,wedge
Question | Answer |
---|---|
what is a pulley? | A machine that uses grooved wheels and ropes to raise and lower the load. |
what is a lever? | A board that moves up and down. |
what is a wedge? | A surface that ends in a sharp edge. |
what is a gear? | A toothed wheel that work together to make things work. |
what is a screw? | An inclined plane wrapped around a metel rod which holds things together. |
what is an inclined plane? | A slanting surface connocting a higher level to a lower one. |
what is a wheel and axel? | At least two wheels connecting by a rod. |