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Currents, Waves, And Tides

15 Questions
Physics Quizzes & Trivia

Test over currents, waves, and tides aimed at sixth grade earth science students.

Questions and Answers
  • 1. 
    • A. 

      In waves towards the shore

    • B. 

      In a small vertical circle

    • C. 

      In the direction of the waves

    • D. 

      Against the currents

  • 2. 
    The lowest point of a wave is the:
    • A. 

      Crest

    • B. 

      Wavelength

    • C. 

      Trough

    • D. 

      Frequency

  • 3. 
    The highest point of a wave is:
    • A. 

      Crest

    • B. 

      Wavelength

    • C. 

      Trough

    • D. 

      Frequency

  • 4. 
    When the wind blows across a body of water (like the ocean), ________________ between the water and air causes the water to move.
    • A. 

      Ions

    • B. 

      Gravity

    • C. 

      Friction

    • D. 

      Density

  • 5. 
    The size of a wave is NOT affected by the:
    • A. 

      Length and time the wind blows across the water

    • B. 

      Salinity of the water

    • C. 

      Strength of the wind (how hard the wind is blowing)

    • D. 

      Distance the wind blows across the water

  • 6. 
    This occurs when circulation in the ocean brings deep, cold water to the ocean surface:
    • A. 

      Rotation of the earth

    • B. 

      Density

    • C. 

      Coriolis effect

    • D. 

      Upwelling

  • 7. 
    • A. 

      Warm, cold

    • B. 

      Cold, warm

    • C. 

      None of the above

    • D. 

      All of the above

  • 8. 
    The amount of salt in a given amount of water is:
    • A. 

      Coriolis effect

    • B. 

      Salinity

    • C. 

      Density current

    • D. 

      Surface current

  • 9. 
    What causes the currents to curve instead of moving in straight lines?
    • A. 

      The moon's gravity

    • B. 

      Wave height

    • C. 

      Coriolis effect

    • D. 

      Density currents

  • 10. 
    What is the main cause of the gulf steam?
    • A. 

      Storms

    • B. 

      Winds that blow now and then

    • C. 

      Winds that blow in regular directions all the time

    • D. 

      The moon's gravity

  • 11. 
    Density currents are caused by:
    • A. 

      Differences in temperature

    • B. 

      Differences in salinity

    • C. 

      The moon's gravity

    • D. 

      A and B are both correct

  • 12. 
    What type of ocean motion is influenced by the moon and the sun?
    • A. 

      Density currents

    • B. 

      Surface currents

    • C. 

      Waves

    • D. 

      Tides

  • 13. 
    Surface currents are caused by
    • A. 

      Wind that blows every now and then

    • B. 

      Wind that blows in regular directions

    • C. 

      The moon's gravitational pull

    • D. 

      Differences in salinity and temperature

  • 14. 
    When the sun, moon, and earth are all aligned (in a straight line), you have a
    • A. 

      Density current

    • B. 

      Neap tide

    • C. 

      Surface current

    • D. 

      Spring tide

  • 15. 
    The sun's rays are strongest at the____________ and weakest at the _______________:Hint: the stronger the rays, the hotter it gets!!!
    • A. 

      Equator, poles

    • B. 

      Poles, equator

    • C. 

      Ocean floor, ocean surface

    • D. 

      Midocean ridge, continental shelf