JQuiz Instructions

1. The product of a force and the length of the lever arm against which it acts is called:

   1.   ?    force
   2.   ?    leverage
   3.   ?    torque
   4.   ?    angular momentum

2. Given a 5 newton force applied at a 90 degree angle, how would you increase the torque? hint: by increasing the __________ of the lever arm.

   
   
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3. Define frequency.

   1.   ?    The maximum displacement of a wave from the equilibrium position.
   2.   ?    The distance between two corresponding points in a train of waves.
   3.   ?    The ratio of the distance traveled by a wave to the time that passes.
   4.   ?    The number of waves past a particular point in 1 second

4. Draw a this right triangle on paper. Draw a vertical line to the right of it. Draw the reflection of the triangle to the right of the line.

   
   
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5. How are the wavelength and frequency of a particular wave related?

   1.   ?    directly proportional
   2.   ?    inversely proportional
   3.   ?    independent

6. An object making a 500 Hz sound moves west. An observer to the west hears a sound that is:

   1.   ?    At a frequency less than 500 Hz
   2.   ?    At a frequency more than 500 Hz
   3.   ?    500 Hz

7. The phenomena by which an observer of a wave receives waves at a greater or lower frequency than at which the source produces them is called:

   1.   ?    The Doppler Effect
   2.   ?    an echo
   3.   ?    refraction
   4.   ?    dispersion

8. In a sound wave molecules are alternately pressed together and pulled apart to produce a pattern of high pressure alternating with low pressure. What general category of wave does this fall into?

   1.   ?    transverse
   2.   ?    circular
   3.   ?    longitudinal
   4.   ?    hybrid

9. When light strikes a surface at such an angle as to cause 100 % of the light to reflect, the phenomena is called: ______ ________ ________.

   1.   ?    Snell's Law
   2.   ?    Total Internal Reflection
   3.   ?    Dispersion

10. What kind of wave is made by a spring being disturbed by moving the hand holding one end up and down at a regular rate?

    1.   ?    longitudinal
    2.   ?    transverse
    3.   ?    circular

11. What is the relationship between electrical resistance and the cross-sectional area of the wire that has the property?

    1.   ?    inverse
    2.   ?    direct
    3.   ?    independent

12. When static charge is transferred, what particle moves?

    1.   ?    electrons
    2.   ?    protons
    3.   ?    neutrons

13. Lenses and prisms exhibit the property of:

    1.   ?    reflection
    2.   ?    diffraction
    3.   ?    interference
    4.   ?    refraction