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Simple Machines
Simple Machines-Whaley
21
Science
5th Grade
11/03/2011

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Cards

Term
force
Definition
The push or pull on an object
Term
Gravity
Definition
the force that pulls all objects in the universe toward one another. 
Term
Mass
Definition
the amount of matter in an object.
Term
Weight
Definition

the force of gravity’s pull on an object.

Term
Work
Definition
the force used to move something in the directions of the force.
Term
Friction
Definition
the force that resists motion when one surface moves over another. 
Term
Energy
Definition
the ability to cause change
Term
Acceleration
Definition

rate of change in speed or direction.

Term
Machine
Definition
any device that makes work easier or faster
Term
Kinetic Energy
Definition

the energy of a moving object. 

(A roller coaster racing down a hill has kinetic energy.)

Term
Potential Energy
Definition
the energy an object has because of its position.  (Objects that can compress, bend, or stretch and then return to their original positions have elastic potential energy.  A rubber band has elastic potential energy.  An object that has the ability to fall has gravitational potential energy.)
Term
[image]
Definition
lever   
Term
[image]
Definition
pulley 
Term
[image]
Definition
Wheel and Axle
Term
[image]
Definition
Inclined Plane
Term
[image]
Definition
Screw
Term
[image]
Definition
Wedge
Term
Would your mass be the same on Earth, the Moon, or floating in space?
Definition
Yes
Term
Newton's First Law of Motion
Definition
An object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an unbalanced force.
Term
Newton's Second Law of Motion
Definition
When an unbalanced force is applied to an object, the object accelerates, and the amount of acceleration depends on the mass of the object and the amount of force applied to it.
Term
Newton's Third Law of Motion
Definition
For every force, there is an equal and opposite force.
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