Force & Motion Quiz: 8th Grade Science Questions & Answers

38 Questions | Total Attempts: 1021

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Force & Motion Quiz: 8th Grade Science Questions & Answers

Do you understand Force, Inertia, Gravity, Acceleration, Velocity, and Speed very well? If your answer is yes, then this Force & Motion Quiz is made for you. Take this fantastic quiz, and you will not only test your knowledge on the subject, but you will also learn many things from here. Have fun, and don't forget to comment.


Questions and Answers
  • 1. 
  • 2. 
    What is motion?
    • A. 

      When an object changes position relative to a reference point.

    • B. 

      When something is still and not moving.

  • 3. 
    What is a reference point
    • A. 

      When an object changes position

    • B. 

      The Object that stays in place

  • 4. 
    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.

  • 5. 
    What is an example of speed?
    • A. 

      Running

    • B. 

      Singing

    • C. 

      Writing

    • D. 

      Listening

  • 6. 
    What is the basic unit for distance or length?
    • A. 

      Yards

    • B. 

      Inches

    • C. 

      Feet

    • D. 

      Meters

  • 7. 
    Velocity is like speed but in (a) _________ direction.
    • A. 

      Given

    • B. 

      Every

    • C. 

      Some

  • 8. 
    Acceleration is 
    • A. 

      Increasing speed, decreasing speed, or changing direction

    • B. 

      Speed in a particular direction

    • C. 

      Velocity with direction

  • 9. 
    The faster the motion, the steeper the 
    • A. 

      Incline

    • B. 

      Slope

    • C. 

      All the above

  • 10. 
    Acceleration refers to
    • A. 

      Decreasing speed, changing direction, increasing speed

    • B. 

      Mass

    • C. 

      Force

  • 11. 
    What are possible units for acceleration?
    • A. 

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

    • B. 

      Meters

    • C. 

      Feet

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 20. 
    When the only force actin on an objec is gravity, ____________ is occuring
  • 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. 
    Two ice skaters are skating. The first skater is pulling upward on the second skater while the second skater is pulling downward on the first skater. Their two forces are equal; however they are pulling each other in two opposite directions.  Which Law of Motion is this an example of?
    • A. 

      Newton's First Law of Motion

    • B. 

      Newton's Second Law of Motion

    • C. 

      Newton's Third Law of Motion

  • 24. 
    A volleyball is moving through the air at the same speed in the same direction until its motion is changed by an unbalanced force. Which Law of Motion is this an example of?
    • A. 

      Newton's First Law of Motion

    • B. 

      Newton's Second Law of Motion

    • C. 

      Newton's Third Law of Motion

  • 25. 
    When you are bowling, and the bowling pins, stay at rest until the bowling ball exerts a force on them by hitting them.  Which Law of Motion is this an example of?
    • A. 

      Newton's First Law of Motion

    • B. 

      Newton's Second Law of Motion

    • C. 

      Newton's Third Law of Motion

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