I have 4 questions on earthquakes

Question

anonymous · Answer

What is the source of energy for an earthquake?	
 
 A.
heat from the asthenosphere
 
 B.
the earth's magnetic field
 
 C.
the building of volcanoes
 
 D.
motion of tectonic plates

anonymous · Answer

What type of material would a seismic wave travel through fastest?	
 
 A.
sand
 
 B.
water
 
 C.
slate
 
 D.
mud

anonymous · Answer

What information can scientists obtain by studying seismographs from different locations?	
 
 A.
the location and strength of the earthquake
 
 B.
when the next earthquake is going to happen
 
 C.
the direction of motion of tectonic plates
 
 D.
the amount of damage caused by an earthquake

anonymous · Answer

The  answers are:
D
C
A