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1. In layers of the Earth, which layer is made of solid Iron and nickel?

• Crust

• Outer Core

• Inner Core

• Mantle

2. Which layer is made of liquid iron and nickel?

• Inner Core

• Outer Core

• Crust

• Mantle

3. How are metamorphic rocks formed?

• A. Crystallization of molten rocks

• B. Cooling and crystallization of molten rocks

• C. Exposure to heat and pressure of sedimentary rocks

• D. Compaction and cementation of sediments

4. Which of the Earth's spheres is most closely associated with soil, rocks, and minerals?

• A. Biosphere

• B. Geosphere

• C. Atmosphere

• D. Hydrosphere

5. Which layer of the Earth is the thickest and made mostly of iron, magnesium and silicon?

• A. Inner core

• B. Outer core

• C. Crust

• D. Mantle

6. Looking at the diagram, which part of the layers of the Earth is the Asthenosphere?

• A. Mantle

• B. Crust

• C. Inner core

• D. Outer core

7. The type of rock that is formed by the cooling and crystallization of magma (molten rock).

• A. Metamorphic

• B. Igneous

• C. Sedimentary

• D Lava