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Earthquakes and Volcanoes 1
Iron (as found in this rusty gate above) makes up the majority of the earth's core.

Earthquakes and Volcanoes 1

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Earthquakes are measured on the Richter scale. Earthquakes involve a sudden release of energy in the Earth's crust whilst a volcano means an opening or rupture in the crust.

See how much you know about these natural phenomena in the first of three quizzes on earthquakes and volcanoes.

1 .
What instrument is used to measure an earthquake?
Anemometer
Galvanometer
Seismometer
Shakeometer
2 .
Molten rock inside the earth has what name?
Lava
Magenta
Magma
Silica
It's called lava once it appears at the surface
3 .
Which of these areas is unlikely to suffer an earthquake?
California
Japan
New Zealand
Scandinavia
It isn't in an unstable part of the Earth's crust
4 .
Why doesn't the UK have any active volcanoes?
It doesn't have high enough mountains
It doesn't lie on a plate boundary
It is surrounded by sea
The earth underneath isn't hot enough
5 .
The earth's crust is made up of separate pieces called what?
Plates
Platters
Saucers
Slabs
6 .
The earth's core is mainly made up of which metal?
Copper
Iron
Magnesium
Zinc
Approximately 90% iron, 10% nickel
7 .
What is the name of the earth's thin surface layer?
Crust
Mantle
Shell
Veneer
Although 'thin' it can be between approx. 5-60+ kms thick
8 .
What is the name for the main opening in a volcano?
Chimney
Downpipe
Vein
Vent
9 .
The earth is made up of how many layers?
2
3
4
6
These are the inner core, the outer core, the mantle and the crust
10 .
What type of volcano has not erupted for many years but could still do so?
Dormant
Extinct
Snoozing
Somnolent
The name dormant suggests that it's 'sleeping'!
Author:  Jan Crompton

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