BALANCED FORCES- forces are balanced when the forces pushing or pulling on an object are the same strength as the forces that are acting upon that same object in the opposite direction
COMPOUND MACHINE- a machine that includes one or more simple machines in it
EFFORT FORCE- the amount of force needed to move a load
EQUILIBRIUM- a state of equilibrium is achieved when all of the forces acting upon an object are equal or balanced
FORCE- a push or a pull that influences the motion of another object. Force can be used to set an object in motion, stop an object, speed up or slow down the speed of an object, as well as change the object's direction
FRICTION- the resistance that one surface or object encounters when moving over or against another surface
FULCRUM - the pivot or the fixed part needed to work with a bar, creating a lever
GRAVITY- the force that attracts all objects toward the center of the Earth
INCLINED PLANE- a plane whose angle is sloped at an inclining or descending angle. The inclined plane is usually used to slide or roll a load from a lower to higher, or higher to lower level
LEVER- a bar resting upon a fulcrum that is often used to move heavy loads by placing pressure on one side of the bar or lever to raise a load on the other end. There are first class, second class, and third class levers
LOAD- the weight or mass that is being supported or carried
PULLEY- a wheel with a groove in it in which a cord or rope can be passed to raise or lower a load. There are three types of pulleys; the fixed pulley, the movable pulley and the combined pulley
SCREW- an inclined plane or thread wrapped around a shaft or rod usually coming to a sharp point on one end
SIMPLE MACHINE- any of the six basic mechanical devices used for applying force. The six simple machines are the lever, pulley, wheel and axle, inclined plane, wedge and the screw.
SLOPE- a surface of which one end is higher than the other; a rising or falling slanted surface
SURFACE TEXTURE- the overall characteristics of a given surface. The surface texture can impact the amount of friction between an object and a surface. Examples of surface texture are rough, smooth, and slippery
UNBALANCED FORCES- forces are unbalanced when one of the forces pushing or pulling an object are greater than the other force resulting in motion
WEDGE- an object usually made of wood or metal that has one thick end that tapers to a thin edge on one side. The thin edge is often sharpened to a cutting edge
WHEEL AND AXLE- a wheel attached to a rod, shaft or an axle that can be turned. The wheel and axle can be used to move an object over a distance or raise and lower a load
COMPOUND MACHINE- a machine that includes one or more simple machines in it
EFFORT FORCE- the amount of force needed to move a load
EQUILIBRIUM- a state of equilibrium is achieved when all of the forces acting upon an object are equal or balanced
FORCE- a push or a pull that influences the motion of another object. Force can be used to set an object in motion, stop an object, speed up or slow down the speed of an object, as well as change the object's direction
FRICTION- the resistance that one surface or object encounters when moving over or against another surface
FULCRUM - the pivot or the fixed part needed to work with a bar, creating a lever
GRAVITY- the force that attracts all objects toward the center of the Earth
INCLINED PLANE- a plane whose angle is sloped at an inclining or descending angle. The inclined plane is usually used to slide or roll a load from a lower to higher, or higher to lower level
LEVER- a bar resting upon a fulcrum that is often used to move heavy loads by placing pressure on one side of the bar or lever to raise a load on the other end. There are first class, second class, and third class levers
LOAD- the weight or mass that is being supported or carried
PULLEY- a wheel with a groove in it in which a cord or rope can be passed to raise or lower a load. There are three types of pulleys; the fixed pulley, the movable pulley and the combined pulley
SCREW- an inclined plane or thread wrapped around a shaft or rod usually coming to a sharp point on one end
SIMPLE MACHINE- any of the six basic mechanical devices used for applying force. The six simple machines are the lever, pulley, wheel and axle, inclined plane, wedge and the screw.
SLOPE- a surface of which one end is higher than the other; a rising or falling slanted surface
SURFACE TEXTURE- the overall characteristics of a given surface. The surface texture can impact the amount of friction between an object and a surface. Examples of surface texture are rough, smooth, and slippery
UNBALANCED FORCES- forces are unbalanced when one of the forces pushing or pulling an object are greater than the other force resulting in motion
WEDGE- an object usually made of wood or metal that has one thick end that tapers to a thin edge on one side. The thin edge is often sharpened to a cutting edge
WHEEL AND AXLE- a wheel attached to a rod, shaft or an axle that can be turned. The wheel and axle can be used to move an object over a distance or raise and lower a load