Vocabulary
A tool or device that makes work easier
What are simple machines?
The six simple machines.
What are: inclined plane, screw, lever, pulley, wheel and axle and wedge?
Which is not a simple machine?
a. lever
b. spring
c. wedge
d. screw
What is b. spring?
A grooved wheel with a rope or belt around it.
What is a pulley?
How many basic types of simple machines are there?
What is six?
Machines made up of more than one simple machine combined.
What are complex or compound machines?
This simple machine is often used to hold things together.
What is a screw?
1. A triangular machine that is used to split objects.
2. Give an example.
1. What is a wedge?
2. What is an axe, chisel, scissors...
Two types of simple machines that contain inclined planes.
What are the screw and wedge?
Name 2 types of simple machines in a shovel.
What are a wedge and a lever?
A push or pull on an object.
What is Force?
A modified incline plane wrapped around a central core.
What is a screw?
The type of simple machine you would use to pry a nail out of a board...
What is a lever?
Name TWO levers you have in your body.
What are arms/elbows; legs/knees; fingers/knuckles; toes/knuckles etc...
A rod attached to the center of a wheel is called?
What is an axle?
The amount of help you can get by using a simple machine.
What is Mechanical Advantage?
What unit is used to measure force?
What are Newtons?
1. What class of lever has the fulcrum between the load and effort?
2. Give an example.
1.What is a first-class lever?
2. see saw; balance scale; scissors, etc..
An inclined plane makes work easier by changing...
the distance over which the force is applied.
1.The class of lever with the load between the fulcrum and effort.
2.Give an example.
1. What is a second-class lever?
2. What is a wheelbarrow, nut-cracker etc...
The formula to calculate work.
What is Force x Distance?
Simple machines make work easier by changing...
What is the amount of force, the direction of the force, or the distance over which the force is applied.
When a simple machine has a mechanical advantage of 1 it...
Is not changing the amount of force or distance, but it may be changing the direction.
What does it mean when a simple machine has a mechanical advantage higher than 1?
The simple machine is increasing the force you are applying.
like: in a wheelbarrow
How can you increase the mechanical advantage of a lever?
What is moving the fulcrum closer to the load?