1.) A bar that turns on a point
Lever
2.) A grooved wheel with a chain or rope wrapped in the groove
Pulley
3.) A wheel with a rod running through the wheel
Wheel and Axle
4.) A flat slanted surface that makes it easier to move an object up a distance
Inclined Plane
5.) Two inclined planes placed back-to-back and used to split or lift objects
Wedge
6.) An inclined plane wound around a cylinder or a cone
7.) _________ is done when a force moves an object over a distance.
Work
Newtons
Joules
9.) The formula for work is ______________________.
force x distance = work
10.) The decrease in effort that is needed to move an object is called _______________________.
Mechanical Advantage
11.) The spot where a lever turns, or pivots, is called the ____________.
Fulcrum
On a first-class lever, the ______________ is located between the effort and the resistance.
Fulcrum
13.) On a second class lever, the _____________ is between the effort and the fulcrum.
Resistance
14.) On a third-class lever, the __________ is between the resistance and the fulcrum.
15.) A ____________________ changes the direction of the force, but does not reduce the amount of force needed to move the object.
fixed pulley
16.) A ___________________ does not change the direction of the force, but does have a mechanical advantage (decrease in effort needed to move the object).
moveable pulley
17.) Any object that makes work easier.
Machine
18.) The force applied to a simple machine.
Effort
19.) The force that works against the effort
20.) Combines multiple fixed and moveable pulleys
Block and Tackle
21.) Combines two or more simple machines to make work easier
Compound Machine
22.)
pulley
23.)
inclined plane
24.)
lever
25.)
wheel and axle
26.)
screw/inclined plane
27.)
wedge
28.)
lever
wheel and axle
29.)
wedge
lever
30.)
screw
wheel and axle