Earthquakes by McKenzie Young

What are Earthquakes?

mckenziemy0810 — 2015-03-19 16:54:02 UTC

a sudden and violent shaking of the ground,

sometimes causing great destruction,

as a result of movements

within the earth's crust or volcanic action.

Fault

mckenziemy0810 — 2015-03-19 17:11:42 UTC

planar fracture or discontinuity in

a volume of rock, across which there

has been significant displacement

along the fractures as a result of earth

movement.

Epicenter

mckenziemy0810 — 2015-03-19 17:13:05 UTC

The point on the Earth's surface that

is directly above the hypocenter

or focus, the point where an

earthquake or underground

explosion originates.

Focus

mckenziemy0810 — 2015-03-19 17:14:06 UTC

the location under the earth's

surface where an

earthquake occurs

cool so far Ms. Young.

christopher_guy — 2015-03-19 17:18:15 UTC

Transform Boundary

mckenziemy0810 — 2015-03-23 16:58:49 UTC

a type of fault whose relative motion is

predominantly horizontal in either

sinistral or dextral direction.

S Wave

mckenziemy0810 — 2015-03-24 16:03:31 UTC

they move through the body of an object

P Wave

mckenziemy0810 — 2015-03-24 16:04:17 UTC

can be produced by earthquakes

and recorded by seismographs.

Aftershock

mckenziemy0810 — 2015-03-24 16:05:26 UTC

a smaller earthquake following the main shock of a large earthquake.

Ricter Scale

mckenziemy0810 — 2015-03-24 16:06:41 UTC

a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. The more destructive earthquakes typically have magnitudes between about 5.5 and 8.9; the scale is logarithmic and a difference of one represents an approximate thirtyfold difference in magnitude.