15.
Locating earthquakes
Earthquake
epicenter can
happen any where
along
circumference
Seismometer
station 1
16.
The point where the 3
circles meet is the
epicenter
Seismometer
station 1
Seismometer
station 2
Seismometer
station 3
17.
Magnitude
The measure of the amount of
energy released by an
earthquake.
Richter scale
Mercalli
scale
18.
Richter scale
Measures the magnitude at
the epicenter
(From weakest to
strongest)
The Richter scale starts from 1 and each whole number
has 30 times more energy than the number before it.
19.
Mercalli
scale
Measures what people felt
and what happens to things
in a place
On the mercalli scale earthquakes are rated from I – XII
(XII is the most severe)
21.
The earthquake in Pakistan
on October 8, 2005 was rated
XII the mercalli scale.
22.
Aftershock
Earthquakes with lesser
magnitude.
(Felt after the main
earthquake)
Earthquakes with larger magnitudes have many
aftershocks with large magnitudes.
23.
When earthquakes occur on
the ocean floor waves of
water are pushed upwards
in sea the
Deep in the all directions.
energy is spread
through the water
so the waves are
not tall.
24.
When the waves reach
shallow water the energy
is spread through less
water.
In shallow waters
the waves are
very tall causing
tsunamis.
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