Lever - Rigid bar that sits on a point called a fulcrum used to lift and move. EXAMPLE: Door handle bars , Screw - Inclined plane wrapped/twisted around a cylinder. EXAMPLE: screw, drill, springs, Pulley - A grooved wheel and rope. EXAMPLE: rope blinds, cranes, Wheel & Axel - A circular object that rotates around a bar. EXAMPLE: windmills, steering wheel, Inclined plane - Sloped or inclined to move or lift objects. EXAMPLE: ramps, slides, Physics - The study of matter and how it moves the forces that move it, Wedge - Two inclined planes put together to form a sharp edge or point used to split or separate. EXAMPLE: knife, plane wings, Simple Machine - Very basic mechanism that makes work easier- very few parts, requires less force to accomplish a task, can be combined with other simple machines and main machines, Motion - Movement going from one place to another, change in direction, Force - A push or pull, Momentum - The amount of force an object has, Newton’s First Law of Motion - Law of Inertia: an object at rest will stay at rest until a force acts on it. An object in motion will stay in motion until a force stops it or changes the motion resisting to stopping or changing a speed or direction, Newton’s Second Law of Motion - Law of Momentum: The more mass an object has, the more force is required to move it. The more mass an object has the more force is required to stop it., Newton’s Third Law of Motion - Conservation (??) of momentum to every force- to every action there is an equal and opposite reaction. ,

Science Test 8/29

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