Name:

Seismic Waves Practice Test (PS3D)

Faults PS3D-1

  1. Provide the correct name for the force and type of fault that it produces:
    Name of force Type of fault

     

     
    reverse
    shear
     

Earthquakes PS3D-2

  1. A fault is  


  2. Contrast Mercalli intensity and Richter magnitude. What do they measure? What scales are used?  








Waves PS3D-3

These words name or describe the three earthquake waves. Place these words in one of three groups:     causes most damage,     compression,     fastest wave,     longitudinal waves,     primary waves,     P-wave,     secondary wave,     slowest,     slow wave,     surface wave,     S-wave,     transverse waves,     travels through solid, liquid, gas,     travels through solids only

 

Richter Scale PS3D-4

A Moment magnitude 3 (Richter magnitude 3) earthquake occurs. Sixty miles away the ground moves 1mm. Complete the table below for earthquakes of different magnitudes.

Magnitude Ground motion 60 miles away
2
 
3 1mm
 
4
 
6
 

    Earthquakes as Tools PS3D-6

    1. Explain how we know that the Earth has layers.  
       






    2. Explain how we know the thicknesses of the Earth's layers.  








    3. Explain how we know that the outer core is liquid.  






    Earthquake Measures PS3D-5

    1. What is the S-P time interval for this seismogram? ___________
    2. What is the S-wave amplitude for this seismogram? ____________
    3. How far away is a different earthquake with a S-P time interval of 40 seconds ? ___________
    4. What is the Richter magnitude of a different earthquake 300 km away with a ground motion of 10 mm? __________

    Tokyo seismogram

      s-p graph richter nomogram
     

    Earth structure PS3D-7

    Below draw and label a cross-section of the Earth. Try to be as accurate as you can with the relative thicknesses of the layers.

    Sketch and label the path of a single P-wave moving through the mantle and outer core.

    Sketch and label the path of a single S-wave starting to move to the opposite side of the Earth.