Page 113 - Genius Kidz Prudence Learning Sc-8

Precautions that must be taken to protect must be constructed so as to minimize the
ourselves from damaging effects of damage. Moreover, roofs must also be of
earthquake : mud or wood.

! Earthquake resistant buildings can be ! LPG gas pipes may burst and cause fire. So,
constructed by the use of advanced every house must be equipped with a fire
engineering techniques. These buildings do extinguisher.
not collapse even under a earthquake of ! Hanging articles like clocks, book shelves,
magnitude 10. paintings, mirrors, fans, etc. must be

! Foundation of a building must be strong. properly fixed on the wall at such places that

! In high risk zones, single storeyed buildings do not cause damage even if they fall down.

or
surface
cr
ust
vibration
of
or
shaking
th
Sudden

ear
an
! ! Sudden vibration or shaking of earth crust or surface is called an earthquake.
called
e
thquak
ear
is
! Sudden vibration or shaking of earth crust or surface is called an earthquake. .
ear

called
of
! ! Study of earthquakes is called seismology. .
seismolog
! Study of earthquakes is called seismology.
y
thquak
es
Study
is
four
of

la
core
inner
,
outer
,
core
ust.
called
yers
mantle
and
cr
th
Ear
is
made
up
! ! Earth is made up of four layers called inner core, outer core, mantle and crust.
! Earth is made up of four layers called inner core, outer core, mantle and crust.
seismic
cause
ear
! ! Changes in the fault zone or seismic zones cause an earthquake. .
zones
an
Chang
or
e
fault
zone
the
! Changes in the fault zone or seismic zones cause an earthquake.
es
thquak
in
! Damaging power of an earthquake is measured on the Richter scale. .
! ! Damaging power of an earthquake is measured on the Richter scale.
hter
Ric
the
on
scale
Damaging
e
is
an
ear
thquak
w
of
measured

er
po
EXERCISE
EXERCISE
1. Multiple choice questions.
(a) Rann of Kutch in Gujarat is the region that is highly prone to :
(i) earthquake (ii) cyclone (iii) lightning (iv) storms
(b) Epicentre is :
(i) located on the earth's surface (ii) located beneath the earth
(iii) a seismograph (iv) None of these
(c) Colliding of ________________ plates is responsible for an earthquake
(i) tectonic (ii) equatorial (iii) orbital (iv) northern
(d) Seismic zones are the regions prone to
(i) earthquakes (ii) thunder storms (iii) cyclone (iv) none of these
(e) Charge flows from a charged body to an uncharged one :
(i) until the entire charge from one flows into the other
(ii) until they both carry the same charge
(iii) until they both become uncharged
(iv) continuously
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