Force & Motion Quiz For 8th Grade

38 Questions | Attempts: 6200

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Force & Motion Quiz For 8th Grade - Quiz

Are you in 8th grade? Do you know Force, Inertia, Gravity, Acceleration, Velocity, and Speed very well? If your answer is yes, then this Force & Motion Quiz is made for you. This informative quiz contains a wide range of questions that will put your conceptual learnings to the test. Challenge yourself and see how many answers you can give. If you like this quiz and learned something new from it, share it with your friends.


Questions and Answers
  • 1. 
    What is the definition of speed?
    • A. 

      When an object changes position.

    • B. 

      An object that stays in place.

    • C. 

      Distance traveled by an object for a unit of time.

    • D. 

      Running very fastly.

  • 2. 
    What is the formula for speed?
    • A. 

      Speed= Distance divided by Time

    • B. 

      Speed= Time X Distance

    • C. 

      D=mv

    • D. 

      None of the above

  • 3. 
    What is an example of speed?
    • A. 

      Running

    • B. 

      Singing

    • C. 

      Writing

    • D. 

      Listening

  • 4. 
    What is a reference point
    • A. 

      When an object changes position

    • B. 

      The Object that stays in place

    • C. 

      Both 1 and 2

    • D. 

      Neither 1 nor 2

  • 5. 
    What is the basic unit for distance or length?
    • A. 

      Yards

    • B. 

      Inches

    • C. 

      Feet

    • D. 

      Meters

  • 6. 
    Velocity is like speed but in (a) _________ direction.
    • A. 

      Given

    • B. 

      Every

    • C. 

      Some

    • D. 

      None of the above

  • 7. 
    Acceleration is 
    • A. 

      Increasing speed, decreasing speed, or changing direction

    • B. 

      Speed in a particular direction

    • C. 

      Velocity with direction

    • D. 

      None of the above

  • 8. 
    The faster the motion, the steeper the 
    • A. 

      Incline

    • B. 

      Slope

    • C. 

      Both 1 and 2

    • D. 

      Neither 1 nor 2

  • 9. 
    Acceleration refers to
    • A. 

      Decreasing speed, changing direction, increasing speed

    • B. 

      Mass

    • C. 

      Force

    • D. 

      Momentum

  • 10. 
    What are possible units for acceleration?
    • A. 

      M/s/s, and k/h/h

    • B. 

      Meters

    • C. 

      Feet

    • D. 

      Newton

  • 11. 
    What is motion?
    • A. 

      When an object changes position relative to a reference point.

    • B. 

      When something is still and not moving.

    • C. 

      Both 1 and 2

    • D. 

      Neither 1 nor 2

  • 12. 
    A force is a push or a pull
    • A. 

      True

    • B. 

      False

  • 13. 
    If you push or pull an object, the  MASS  /  ACCELERATION will change.
  • 14. 
    Balanced forces are 
    • A. 

      When the forces of an object produce a net force larger than zero.

    • B. 

      When the forces are the same .

    • C. 

      When the forces of an object produce a net force equal to zero.

    • D. 

      None of the above

  • 15. 
    Unbalanced forces are 
    • A. 

      When the forces of an object produce a net force larger than zero.

    • B. 

      When the forces are the same.

    • C. 

      When the forces of an object produce a net force equal to zero.

    • D. 

      All of the above

  • 16. 
    What is Newton's first law?
    • A. 

      Every action has an equal and opposite reaction.

    • B. 

      An object's acceleration depends on the mass of the object and the amount of force being applied.

    • C. 

      An object in motion stays in motion, and an object at rest stays at rest until acted upon by an outside force.

    • D. 

      None of the above

  • 17. 
    What is Newton's second law?
    • A. 

      Every action has an equal and opposite reaction.

    • B. 

      An object's acceleration depends on the mass of the object and the amount of force being applied.

    • C. 

      An object in motion stays in motion, and an object at rest stays at rest until acted upon by an outside force.

    • D. 

      None of the above

  • 18. 
    How can you increase/decrease friction?
    • A. 

      Add a rough surface to increase, add lubricant to decrease.

    • B. 

      Just add water.

    • C. 

      Add force

    • D. 

      Add acceleration

  • 19. 
    Three characteristics of balanced forces are
    • A. 

      They don't change in motion. They are equal in size. The forces are opposite in direction.

    • B. 

      Constant acceleration, speed, and velocity.

    • C. 

      Causes change in motion they are not equal the move in the opposite direction.

    • D. 

      All of the above

  • 20. 
    When the only force acting on an object is gravity, ____________ is occurring
  • 21. 
    Gravity is the force of attraction between all masses.
    • A. 

      True

    • B. 

      False

  • 22. 
    Inertia is a property of matter.
    • A. 

      True

    • B. 

      False

  • 23. 
    The distance traveled by an object is divided by the time it takes to travel that distance is called
    • A. 

      Average velocity.

    • B. 

      Average speed.

    • C. 

      Average acceleration.

    • D. 

      Activity.

  • 24. 
    In order to determine speed, you must know
    • A. 

      Time.

    • B. 

      Distance

    • C. 

      Both a and b.

    • D. 

      Neither a nor b.

  • 25. 
    What is the speed of an object at rest?
    • A. 

      15 km/h

    • B. 

      0 km/h

    • C. 

      1 km/h

    • D. 

      This cannot be determined without more information.

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