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Science Motion Vocab
Chapter 11 vocab
Question | Answer |
---|---|
simple machine | a machine made up of 1 or 2 parts |
acceleration | the rate of which the speed or direction of motion of an object changes over time |
friction | the force that results when 2 materials rub against each other or when their contact prevents sliding |
lever | a machine with a bar that moves around a fixed point or support |
contact force | a force that requires 2 pieces of matter to touch |
wedge | a machine that can be made up of 1 or 2 inclined planes |
force | a push or a pull that acts on an object |
non-contact force | a force that acts at a distance |
inclined plane | a machine consisting of a flat surface with one end higher than the other |
inertia | the tendency of an object to resist any change in motion |
uniform motion | motion where the speed and direction do not change |
wheel and axle | a machine made up of a circular object attached to a bar |
gravity | the force of attraction (the pull) between any two objects |
screw | A machine consisting of a smooth cylinder with a tiny inclined plane wrapped around it |