Vocabulary 1
What is force measured in?
Newtons
This simple machine is described as any bar that turns or moves on a point.
Lever
Give an example of Newton's Second Law of Motion.
Answers Vary
***Triple Points***
How many classifications of levers are there?
3
List two common objects that have a wheel and axle in them.
Answers Vary
A ____________ is any object that makes work easier.
Machine
A _______________ occurs when there is a decrease in the effort needed to move an object a distance.
Mechanical Advantage
Which of Newton's Laws is it when a soccer ball is rolling down a hill and gradually comes to a stop?
Newton's First Law
This simple machine makes work easier by changing the direction of force or by reducing the amount of force needed to move an object.
Pulley
What kind of Pulley changes the direction of the force, but does not reduce the amount of force needed to move the object?
Fixed Pulley
____________ is a force acting upon an object and moving it a certain distance.
Work
**Double Points**
What is the formula for work?
Force x distance = Work
Which of Newton's Laws is it when a person jumps on a trampoline and bounces back into the air?
Newton's Third Law
This simple machine is an inclined plane wound around a cylinder or a cone.
Screw
**Double Points**
What kind of pulley does not change the direction of the force, but does have a mechanical advantage?
Moveable Pulley
What is the unit measurement for work?
Joule
This is the force being applied to a simple machine.
Effort force
**Double Points**
Which of Newton's Laws is known as the Law of Inertia?
Newton's First Law
A blade and a shovel are examples of this type of simple machine.
A Wedge
**Double Points**
A fork acts as a compound machine that includes what two simple machines?
A lever and a wedge
** Double Points**
This force works against another on a simple machine. Sometimes referred to as the load.
Resistance force
This is a specific spot where a lever turns and pivots.
Fulcrum
Newton's Second Law of Motion uses which three forces?
Force, Mass, and Acceleration
This simple machine is a flat, slanted surface, such as a ramp or a slide.
Inclined Plane
Which classification of lever has the resistance force in the center?
2nd Class