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Simple Machines
SOL K.3, 1.2, 2.2, 3.2
20
Science
3rd Grade
04/29/2006

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Cards

Term
_____ is done when an object is moved because of a force applied to it
Definition
work
Term
_____ is done when an object is moved because of a force applied to it
Definition
work
Term
A push or a pull is called what?
Definition
A force
Term
What simple machine is used for moving objects quickly and smoothly?
Definition
Wheel and axle
Term
What simple machine is a bar that rests on a fulcrum?
Definition
Lever
Example : seesaw
Term
A lever is most effective when the fulcrum is placed _______ the load
Definition
near
Term
What simple machine will help you turn on the water at the sink?
Definition
Wheel and axle
Term
Ramps and stairs are examples of what kind of simple machine?
Definition
Inclined plane
Term
When someone pulls down the rope to raise the flag, a pulley is used to do what?
Definition
Change the direction of the force
Term
A car jack, used to change a tire is an example of what simple machine?
Definition
lever
Term
What simple machine is used to split things apart?
Definition
wedge
Term
What simple machine is a rope wrapped around a wheel?
Definition
pulley
Term
If you are on the 1st floor of a house and need to get to the second floor, what simple machine will help you?
Definition
Inclined plane (if you go up the stairs)
Pulley (if you use the elevator)
Term
What simple machine is two incline planes back to back?
Definition
Wedge
Term
Knives and axes are examples of what type of simple machine?
Definition
Wedge
Term
What simple machine is a sloping force?
Definition
Inclined plane
Term
________ is a force that slows or stops and object.
Definition
FRICTION
Term
What simple machine is an inclined plane wrapped around a post or cylinder?
Definition
SCREW
Term
What simple machine is used to raise a flag?
Definition
pulley
Term
_________ is the pulling force between two objects.
Definition
GRAVITY
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