second semester final exam

1.      Loudness measure in

• Db

• meter

• cm

• mm

1.       The SI unit for frequency is

• Hz

• Meter

• mm

• micrometer

     Sound cannot travel through a vacuum.

     

• Vacuum

• Air

• Solid

• Liquid

1.      The highest point of the wave above the rest position is the ­­______.

  

• Crest

• Through

• Main point

• All of them

    Sound cannot travel through a _____

    

• Vacuum

• Air

•   Solid

• Liquid

     Mechanical wave’s require­­_______ to travel through.

  

• Matter

• Medium

• A and B

• None of them

     There are ____ main types of mechanical waves.

• 1

• 2

• 3

• 4

     A high pitched sound means the vibrations with_____ frequency

  

• High

•   Low

•    Very low

• None of them

    A low pitched sound means the vibrations with_____ frequency

    

• High

• Low

• Very low

• None of them

     ……………………………are objects that allow electricity to pass easily.

   

• Conductors

• İnsulators

• Semiconductors

• None of them