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Crust: Made up of tectonic plates which make up all the different countries. The crust is divided into
two parts the continental crust and the oceanic crust. The thickness of these ranges from 0 100
Mantle: The thickest part of the earth and makes up 80% of the Earths volume! It is similar to an
Outer Core: Composed of 85% liquid iron and 5% nickel. The temperature ranges from 4000
Degrees C 6100 Degrees C! It controls Earth's magnetic field which protects us from the sun's
Inner Core: This is the hottest part of the earth. It may have a temperature as hot as the sun! The
inner core has about a 1216km radius.
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Japan's most powerful earthquake since records began has struck the
north-east coast, triggering a massive tsunami.
Cars, ships and buildings were swept away by a wall of water after the
8.9-magnitude tremor, which struck about 400km (250 miles) north-east of
A state of emergency has been declared at a nuclear power plant but the PM
said there had been no radiation leaks.
Officials say 350 people are dead and about 500 missing, but it is feared the
final death toll will be much greater.…read more
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The quake was the fifth-largest in the world since 1900 and nearly 8,000
times stronger than the one which devastated Christchurch, New Zealand,
last month, said scientists.
Measured at 8.9 by the US Geological Survey, it struck at 1446 local time
(0546 GMT) at a depth of about 24km.
The tsunami rolled across the Pacific at 800km/h (500mph) - as fast as a
jetliner - before hitting Hawaii and the US West Coast.…read more