I know this is not math, but please help!!

Which scale of measurement measures the magnitude or strength of an earthquake based on seismic waves?
Mercali
Richter
Moment Magnitude
Focus

Question

I know this is not math, but please help!!

Which scale of measurement measures the magnitude or strength of an earthquake based on seismic waves? 
Mercali
Richter
Moment Magnitude
Focus

mathstudent55 · Answer

Richter

anonymous · Answer

^^

anonymous · Answer

Which direction is the particle motion in shear waves relative to the energy of the wave?
a.
West
c.
Parallel
b.
Perpendicular
d.
Downward

anonymous · Answer

its east or west, but it depends on the gravitational pull

anonymous · Answer

lmao , you wanna help me on my homework ? :33.

anonymous · Answer

.. sure

anonymous · Answer

In what direction do seismic waves carry the energy of an earthquake?
a.
away from the focus
b.
toward the focus
c.
from the surface to the interior
d.
through the mantle only

anonymous · Answer

the waves would travel in the same direction as the power is going.

anonymous · Answer

soooooo away from the focus

anonymous · Answer

When an earthquake occurs, S waves are the first seismic waves to arrive at a given location.
 -True, or false?

anonymous · Answer

false p waves are first

anonymous · Answer

Thank you soo much ! c: