Science Spark Challenge

You were asked to locate the epicenter of a recent earthquake. Which correct sequence of events

      should you follow?

I.                 Solve for the difference in the arrival time of S and P waves

II.               Use compass to locate the center

III.              Obtain data from three different seismological stations

IV.             Determine the distance of the epicenter from the station

•   I, III, II, IV              

• III, I, IV, II                 

• III, IV, I, II            

• IV, II, I, III

What method is used by the seismologists to identify the epicenter of an earthquake?

• Deductive method

• Inductive method

• Problem Solving method

• Triangulation method

Data showing the arrival time of P and S wave which were recorded from three seismic stations

    could be used by seismologists to identify the _.

• damage at the focus

• intensity of the earthquake

• magnitude of the earthquake

• location of the earthquake`s epicenter

All of the following are basis of scientists in dividing the earth`s lithosphere EXCEPT

• mountain formation       

• seismicity

• volcanism

• weathering

What does the location of the earthquake epicenters say about lithospheric plates?

• The origin of the earthquake epicenters is always above the focus.

• The origin of the earthquake epicenters is also the location of volcanoes.

• Location of mountain ranges are often areas where earthquake epicenters are detected

• The location of earthquake epicenters are most likely the edges of the tectonic boundaries

Which of the following is NOT TRUE about lithospheric plates?

• vary in thickness

• thickest in the mountain regions  

• include crust and upper mantle

• have the same thickness everywhere

Refer to the tectonic plate map.

     Which plate LESS LIKELY to experienced

     earthquake activity?

• Antarctic Plate

• Pacific Plate

• Philippine Plate

• South American Plate

How will you relate the distribution of active volcanoes, earthquake epicenters and mountain

     belts all over the world?

• Some volcanoes and mountain belts all over the world are situated in the same location.

• The location of earthquake epicenters is an indication of the presence of active volcanoes.

• Volcanic activities caused for occurrence of earthquake and formation of mountain ranges.

• Active volcanoes, earthquake epicenters and mountain belts are somewhat located almost on same areas.
  
  

Using data from seismogram, the distance to the epicenter can be determined by measuring the _.

• speed of the surface wave

• the arrival time of surface wave

• the difference in the arrival time of P and S wave

•   the ratio of the amplitude of the largest P and S wave

Why is divergent boundary referred as constructive boundary?  

          

• causes deformation

• new crust is formed   

• volcanic island arc are observed

• trenches are formed