waves of energy that travel through the earth

primary waves -fast waves and go through solids, liquids, and gases

secondary waves-sheer back and forth and cannot go through liquids.

move ground in an up and down motion in circles

point inside earth where earthquake begins

point on the surface that is directly above the focus.

instument that measures strength of earthquakes

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Stack #63658

Question	Answer
earthquake	movement of eearth's surface
seismic waves	waves of energy that travel through the earth
p waves	primary waves -fast waves and go through solids, liquids, and gases
s waves	secondary waves-sheer back and forth and cannot go through liquids.
surface waves	move ground in an up and down motion in circles
focus	point inside earth where earthquake begins
epicenter	point on the surface that is directly above the focus.
richter scale	instument that measures strength of earthquakes