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Eighth Grade (Grade 8) Physics Questions

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Grade 8 Simple Machines
An object being lifted or moved by a machine is
  1. a fulcrum.
  2. a load.
  3. work.
  4. force.
  5. friction.
Grade 8 Waves and Sound
Grade 8 Heat Transfer
Grade 8 Simple Machines
Grade 8 Heat Transfer
Grade 8 Forces and Motion

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Grade 8 Forces and Motion
Grade 8 Simple Machines
Comparing a machine's work output with work input refers to
  1. a watt.
  2. mechanical efficiency.
  3. mechanical advantage.
  4. a joule.
Grade 8 Forces and Motion
Grade 8 Forces and Motion
Grade 8 Magnetism and Electricity
Earth's magnetic field has
  1. an east and west pole.
  2. a north and south pole.
  3. a never changing field.
  4. none of the above
Grade 8 Waves and Sound
What does the diagram represent?
Doppler Effect
  1. the actual shift in frequency of sounds waves by a moving object
  2. the apparent shift in frequency of sounds waves by a moving object
  3. the actual shift in frequency of sounds waves by a stationary object
  4. the apparent shift in frequency of sounds waves by a stationary object
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