Chapter 9 - Simple Machines

Question 1

Fulcrum

Answer 1

The turning point of a lever is called a fulcrum , when the fulcrum is between the load and the effort it is called a first class lever.

Question 2

Load

Answer 2

The resistance to motion that a lever works against is called the load , when the load is in between the effort and the fulcrum it is called a second class lever.

Question 3

Effort

Answer 3

The force used to cause movement is called the effort , when the effort is between the load and the fulcrum it is called a third class lever

Question 4

Inclined plane

Answer 4

A surface slanted upward that lowers the effort needed to lift a load , although a smaller effort is needed the load must be moved through a larger distance.

Question 5

Lever

Answer 5

A lever is a simple machine that uses the turning effect of a forces , the turning point of a lever is called a fulcrum.

Question 6

Wheel and Axel

Answer 6

Lever that can rotate. The effort applied to the outside of the wheel produces a greater force on the axle because the effort is moved over a longer distance.

Question 7

Block and Tackle

Answer 7

System of pulleys in which there are both fixed and moving pulleys.

Question 8

Transfer

Answer 8

Move energy from one object to another using simple machines.

Question 9

Transform

Answer 9

Change one form (of energy) into another.

Question 10

Pulley

Answer 10

A wheel with a grooved rim around which a cord passes ,chick acts to change the direction of a force applied to the cord and is used to raise heavy weights.