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Stack #3994839

QuestionAnswer
A ________ is a push or a pull force
On the earth _________ is the force that pulls all objects toward it. gravity
____________ is the force that resists the movement of objects against each other. friction Without friction objects would slip and slide
__________ is a change in position Motion
A greater ___________ requires a greater force. mass
___________ is done when a force moves an object over a distance. work
___________ is the ability to do work. energy
What are two forces we experience every day? gravity and friction
A _________ is any object that makes work easier. machine
Name some simple machines that make tasks easier. lever, wheel, axle, pulley, inclined plane, screw , wedge
The force that you apply to cause a simple machine to do work is called the _____________. effort
The weight of an object being moved is called the __________. load
A __________ is a bar that turns on a point. lever.
The point of a lever is called the ______________ fulcrum.
One or more inclined planes used to force materials apart wedge
a wheel with a groove that can hold a rope pulley
a flat, sloped surface inclined plane
a wheel with a rod running through it wheel and axle
a inclined plane wound around an axle screw
When you turn the axle of a wheel and axle, the wheel travels a greater ____________ than the axle does. distance
When you turn the wheel of a wheel and axle, the axle turns with greater _________ force than the wheel does. force
a fixed pulley changes the _______of the force needed to lift the load. direction
A block and tackle allows you to use ____ force when lifting an object because the rope moves a ___________ distance less grater
The inclined plane lets you use less force to more an object because the load moves a greater ____________. distance
The inclined plane on a screw is called the ____________. thread
Where are the effort and load placed when using a pulley? The force applied to the pulley is called the effort.
Why should Christians value work and machines? When Christain use machines for work, they are obeying God's command to wisely use the earth and its resources.
Identify the pictures of simple machines. look at chapter review
T or F - A greater mass requires less force? False
T or F - An inclined plane is a simple machine. True
T or F - A force moving an object over a distance is called work. True
T or F - An object that makes work easier is called a machine. True
A bar that turns on a point is called a wheel and axle. F- It is called an fulcrum
An inclined plane lets you use less force to move an object because the load moves a greater __________. distance
A fixed pulley changes the _________ of the force needed to lift the load. direction
A block and tackle allows you to use ________ force when lifting an object because the rope moves a _________ distance. less greater
Christians glorify God when they invent machines that help __________. others
________ are wheel and axles with "teeth" that work together. gears
The pointed end of a nail is a _______. wedge
Created by: Bonnie Daniel
 

 



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