题目内容

The outer core is liquid or solid?

A. Liquid
B. Solid

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Earth is divided into different zones based on physical properties. Which part is the soft, weak layer below the lithosphere?

Asthenosphere
B. Lower Mantle
C. Lithosphere
D. Inner core

Which rock is the cooling and solidification of magma?

A. Metamorphic rock
B. Igneous rock
C. Sedimentary rock

The basic silicate structures are:

A. Independent tetrahedra
B. Single chain
C. Double chain
D. Sheet chain
E. 3-Dimensional framework

Is amber a mineral?