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Force, Motion, and Simple Machines

Name ____________________________________

Date _______________ HR ___________________
Across
A simple machine made of a long rod that pivots on a fulcrum. This machine is used to lift heavy objects. (ex. crowbar, hammer, see-saw)
The measure of speed in a particular direction.
The resistance of an object to change motion or resting position.
A simple machine that uses a grooved wheel with a rope to lift heavy objects. This machine changes the direction of the force.
No movement
For every action, there is an equal and opposite reaction.
The greater the mass of an object, the more force needed to accelerate the object.
Has few or no moving parts and work by changing the direction of force or reducing the amount of force needed
The force used to move an object.
Known for Universal Law of Gravitation and the Three Laws of Motion.
Invisible force that pulls objects towards the center of the earth.
A measure of change in an objects speed and direction.
Simple machine with two or more grooved wheels (wheels with teeth) that rotate together to increase force. (ex. clock, can opener, drill)
The measure of how fast an object moves.
Down
Resistance of motion when objects rub against each other in opposite directions.
A simple machine that helps move heavy objects up and down different heights using a slanted or angled surface.
Causes movement
Causes objects to move, slow down, or stop movement.
An object at rest remains at rest, and an object in motion remains in motion unless acted on by an outside unbalanced force.
A simple machine that uses a wheel with a rod connected in the middle to move heavy objects from one location to another. (ex. bicycle, car, shopping cart)
A simple machine made of an inclined plane wrapped around a central rod. This machine is used to tighten and hold things together. (ex. bottle cap, jar lid)
A simple machine used to cut, slice, split, separate, or push materials apart. (ex. scissors, knife, axe)
A change in position or location of an object caused by a force.