Simple Machines

Question 1

Ability to move an object using less force

Answer 1

Mechanical Advantage

Question 2

In order to use less force you must apply the force over a longer distance

Answer 2

Distance Principle

Question 3

Ramp

Answer 3

Inclined Plane

Question 4

Two inclined planes placed bottom to bottom

Answer 4

Wedge

Question 5

Screw with a flat tip

Answer 5

Bolt

Question 6

Inclined plane wrapped around a cylinder or cone

Answer 6

Screw

Question 7

Distance between the threads of a screw or a bolt

Answer 7

Pitch

Question 8

A solid bar that rotates around a fixed point

Answer 8

Lever

Question 9

Weight that is moved by the lever

Answer 9

Resistance

Question 10

The solid bar of a lever

Answer 10

Effort Arm

Question 11

Force applied to move the resistance

Answer 11

Effort

Question 12

Point around which the effort arm rotate

Answer 12

Fulcrum

Question 13

Law of moments

Answer 13

The farther the effort is from the fulcrum compared to the distance the resistance is from the fulcrum, the less effort that is required to move the resistance.

Question 14

Fulcrum is between the resistance and the effort 

Answer 14

First-class Lever

Question 15

Resistance is between the fulcrum and the effort

Answer 15

Second-class Lever

Question 16

Effort is between the fulcrum and the resistance

Answer 16

Third-class Lever

Question 17

Special wheel with teeth

Answer 17

Gear

Question 18

Gear system that changes rotational motion to linear motion

Answer 18

Rack and pinion

Question 19

Gear system that can connect parallel gear shafts 

Answer 19

Spur Gear

Question 20

Gear system where a threaded shaft tunes a wheel

Answer 20

Worm Gear

Question 21

Gear system that can connect non-parallel gear shafts

Answer 21

Bevel gear

Question 22

A pulley system with one fixed and one or more movable pulley

Answer 22

Block and Tackle