Simple Machines

Question 1

machine that does work with only one movement of the machine

Answer 1

simple machine

Question 2

bar that is free to pivot around fixed point

Answer 2

lever

Question 3

grooved wheel with a rope, chain, or cable running along a groove

Answer 3

pulley

Question 4

1st class lever

Answer 4

fulcrum is between the input force and output force

Question 5

2nd class lever

Answer 5

output force is between fulcrum and input force

Question 6

3rd class lever

Answer 6

input force is between fulcrum and output force

Question 7

attached to something that doesn’t move

Answer 7

fixed pulley

Question 8

one end of the rope is fixed and the wheel is free to move

Answer 8

moveable pulley

Question 9

wheel and axle- consists of an ______ attached to center of a larger wheel so that the wheel and axle _____ together

Answer 9

axle, rotate

Question 10

inclined plane- sloping surface, such as a ______ that reduces the amount of ______ required to do work

Answer 10

ramp, force

Question 11

inclined plane wrapped in a spiral around a cylindrical post

Answer 11

screw

Question 12

an inclined plane with one or two sloping slides

Answer 12

wedge

Question 13

two or more simple machines that operate together

Answer 13

compound machine