Ch 9 - Machines

Question 1

Fulcrum

Answer 1

The turning point of a lever.

Question 2

Load

Answer 2

The part of a lever that has weight that is being pushed by someone or something.

Question 3

Effort

Answer 3

The thing that is moving the object/lever.

Question 4

First Class Lever

Answer 4

A lever that has the load, fulcrum, then effort. Uses force multiplier. An example of this is using a spoon to open a can/A crowbar lifting a boulder.

Question 5

Force Multiplier

Answer 5

Used in first class levers, when the effort is at a greater distance than the load being moved.

Question 6

Second Class Levers

Answer 6

A lever that has the effort, load, then fulcrum. An example of this is a wheelbarrow and a nutcracker.

Question 7

Mechanical Advantage

Answer 7

Is when there is a force multiplier, when there is a heavy load, but less effort is put in due to your force being multiplied. To solve this you divide the load by effort.

Question 8

Third Class Levers

Answer 8

When there is a lever that has the fulcrum, effort, then load. An example is hitting a ball (load) with a baseball bat.

Question 9

Speed Multipliers

Answer 9

A simple machine that increases the speed when the effort has more force than the load, but over a short distance.

Question 10

Levers

Answer 10

Simple machine that usually has a long stick and turns at a certain point when force is applied.

Question 11

Kinetic Energy

Answer 11

Is energy that is created from movement. When you run it creates speed energy making you more pumped.

Question 12

Potential Energy

Answer 12

Energy that is stored inside of you even if you aren’t moving.

Question 13

Wedges

Answer 13

Are a sharp object that helps us split something in half with less effort.

Question 14

Screws

Answer 14

Are an object that helps us make a hole into something.

Question 15

Thread

Answer 15

Is the spiral part of a screw, they assist the screw with creating the hole.

Question 16

Pitch

Answer 16

Is the distance in between each thread.