1. An earthquake is a sudden
movement of a part of the
earths surface . It is caused
by severe shock waves that
travel through the solid
rocks from under ground
to the surface .
2. A STRONG QUAKE IS DETERMINED USING AN
INSTRUMENT CALLED A SEISMOGRAPH
THE INTENSITY OF AN EARTHQUAKE CAN BE
DETERMINED FROM THE RECORDING MADE BY A
SEISMOGRAPH USING A SCALE KNOWN AS THE
RICHTER SCALE .UNLIMITED LEVELS CAN BE
MEASURED ON THE RICHTER SCALE .THE LOWEST
VALUE OR 1 INDICATESN A QUAKE THAT IS
ALMOST NOT FELT AND A VALUE OF 8 OR HIGHER
INDICATES A MASSIVE EARTHQUAKE .
3. EFFECTS OF AN EARTHQUAKE
Buildings may develop cracks or even
Roads and bridges get damaged .
Trees get uprooted
Many loose their lives
An undersea earthquake causes
It can cause landslides and fires