Communication Year 9 Science

20 Questions | Total Attempts: 376

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Communication Quizzes & Trivia

This test is designed to test all the outcomes for the science topic.


Questions and Answers
  • 1. 
    Name the two types of waves
  • 2. 
    Electromagnetic waves require matter. true or false
    • A. 

      True

    • B. 

      False

  • 3. 
    Longitudinal waves require matter. True or false
    • A. 

      True

    • B. 

      False

  • 4. 
    What is Frequency?
    • A. 

      The length of a complete wave

    • B. 

      The number of complete waves / sec

    • C. 

      The speed of the waves

  • 5. 
    Complete the velocity formulavelocity=_______ x_________
  • 6. 
    The amplitude of a wave is
    • A. 

      Its length

    • B. 

      Its height

    • C. 

      Its speed

  • 7. 
    What is frequency of waves measured in?
  • 8. 
    When an AM radio signal is sent a long a carrier wave it creates an a______ m_______ wave
  • 9. 
    What sort of waves are radio and tv audio signals sent along?
  • 10. 
    A digital TV sends its signals in bits. True or False
    • A. 

      True

    • B. 

      False

  • 11. 
    BEcause a digital tv sends its signals in bits the sound and picture are worse quality. True or False
    • A. 

      True

    • B. 

      False

  • 12. 
    Optic fibers use ________ to carry high frequency light impulses
    • A. 

      Refraction

    • B. 

      Reflection

  • 13. 
    On a flat reflective surface the angle of incidence  does not equal the angle of reflection. True or false
    • A. 

      True

    • B. 

      False

  • 14. 
    Reflected light rays diverge from a convex mirror. True or False
    • A. 

      True

    • B. 

      False

  • 15. 
    Reflected rays diverge from a concave mirror true or false?
    • A. 

      True

    • B. 

      False

  • 16. 
    What is it called when light bounces off an object?
  • 17. 
    What is it called when light bends?
  • 18. 
    What is an example of a transverse matter wave?
    • A. 

      Light wave

    • B. 

      Sound wave

    • C. 

      Heat wave

  • 19. 
    What is an example of an electromagnetic wave?
    • A. 

      Heat

    • B. 

      Sound

    • C. 

      Water wave

  • 20. 
    What is the speed a wave travels in a straight line is called?
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