Science: Middle School: Grades 6, 7 and 8 Quiz - Earthquakes and Volcanoes 1 (Answers)
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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.
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These are the inner core, the outer core, the mantle and the crust
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Although 'thin' it can be between approx. 5-60+ kms thick
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It's called lava once it appears at the surface
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It isn't in an unstable part of the Earth's crust
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The name dormant suggests that it's 'sleeping'!
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Approximately 90% iron, 10% nickel
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