forces and motion
TRANSCRIPT
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Q: The amount of matter in an object
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A: Mass
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Q: The unit of measurement for mass
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A: Grams/Kilograms
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Q: The 3 states of matter are…
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A: Solid, Liquid, Gas
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Q: A change in the state of matter is caused by…
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A: A change in temperature. (Adding or removing heat.)
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Q: When a force moves an object.
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A: Work
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Q: The unit of measurement for work.
It measures heat, electricity and mechanical work.
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A: Joule
Joule’s Apparatus
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Q: Newton’s First Law of Motion
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A: InertiaAn object at rest will stay at rest; an object in motion will stay in motion unless acted on by
an outside force.
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Q: Newton’s Second Law of Motion
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A: Force = Mass X Acceleration
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Q: The unit of measurement for force
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A: Newton
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Q: Newton’s Third Law of Motion
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A: For every action there is an equal and opposite reaction.
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Q: The force that slows or prevents motion.
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A: Friction
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Q: Force created by magnetic objects.
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A: Magnetism
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Q: Force applied when doing work.
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A: Effort Force (EF)
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Q: Force to overcome when doing work.
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A: Resistance Force (RF)
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Q: Formula to calculate speed/velocity
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A: Speed (velocity) = Distance X Time
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Q: A change in speed or direction.
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A: AccelerationTo speed up, slow down, or change direction
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Q: The unit of measurement for acceleration
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A: (CM)Meters/sec/sec or (CM)Meters/sec2
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Q: A machine that changes the size or direction of an applied
force.
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A: Simple machine
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Q: Simple machine with two wheels that rotate together.
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A: Wheel and axle
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Q: A simple machine that is a sloping surface used to raise
objects (ramp, stairs)
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A: Inclined plane
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Q: A simple machine that is an inclined plane wrapped around a
cylinder. (propeller, circular staircase)
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A: Screw
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Q: A simple machine made of two inclined planes back to back
(knife, ax, needle, bow of a boat)
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A: Wedge
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Q: Simple machine composed of a bar pivoting around a fixed point
(fulcrum).
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A: Lever
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Q: Fixed point that a lever turns around.
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A: Fulcrum
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Q: A simple machine with a grooved wheel with a rope or
chain running along the groove.
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A: Pulley