Chapter 9 - Simple Machines

Question 1

First class lever

Answer 1

lever with the fulcrum between the effort and the load

Question 2

Second class lever

Answer 2

lever with the load between the effort and the fulcrum

Question 3

Third class lever

Answer 3

lever with the effort between the load and the fulcrum

Question 4

Fulcrum

Answer 4

point around which a lever turns

Question 5

Effort

Answer 5

force used to cause movement

Question 6

Load

Answer 6

force, such as the weight of an object, resisting motion against which a lever works

Question 7

Block and Tackle

Answer 7

system of pulleys in which there are both fixed and moving pulleys

Question 8

Pulley

Answer 8

A special type of wheel and axle that makes it easier for you to lift a load

Question 9

Gears

Answer 9

toothed wheel that can turn other toothed wheels

Question 10

Driving Gear

Answer 10

gear that causes another to move

Question 11

Driven Gear

Answer 11

gear that is moved by another gear