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m&m 3.1

Moving Matter

QuestionAnswer
Physics The study of matter and energy
Matter Anything which occupies space, has substance, and cannot be created or destroyed. Exists in the basic forms: solids, liquids, and gases
Solid The only form of matter that has a definite shape and occupies a definite amount of space
Atom The most basic unit of a substance
Molecules Groups of linked atoms that make up most substances
Cohesion The attraction that allows molecules of the same kind of matter to stick together
Adhesion The attraction which allows molecules of a different kind of matter to stick together
Volume The amount of space a substance occupies
Volume of a rectangle V=lwh
Volume of a cylinder V= r squared times h
Volume of a sphere V=4/3 r cubed
Mass The amount of a material in a object, quantity of matter, not affected by change in gravitational pull
Weight A measurement of the pull of gravity upon any object
Density The mass per unit volume of a substance (heavy or light in proportion to their size). D=m/v. (same size object will have different density)
Distance How far something has moved if we know the length of the path it has traveled
Speed The distance covered by a moving object in a unit of time, s=d/t
Velocity The rate of speed in a particular direction. Tells us how fast and which direction the object is going
Uniform motion Motion in which the velocity of the moving object does not change
Accelerated motion Motion in which the velocity of the moving object does change
Acceleration The change in velocity over a period of time, direction or speed also do this
Acceleration of gravity The type of acceleration experienced by falling objects
Positive acceleration When the velocity of an object changes so that its speed increases or its direction changes
Negative acceleration When the velocity of an object changes so that its speed decreases. Also called deceleration
Created by: Jer Stephens
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