1) What is the Earth's outermost layer? a) Crust b) Mantle c) Inner core d) Outer core 2) Which layer is liquid? a) Crust b) Mantle c) Inner core d) Outer core 3) What is the thickest layer of Earth? a) Crust b) Mantle c) Inner core d) Outer core 4) Which layer is solid iron and nickel? a) Crust b) Mantle c) Inner core d) Outer core 5) What is the main component of the crust? a) Silicon b) Iron c) Nickel d) Magnesium 6) Which mineral is hardest? a) Diamond b) Quartz c) Talc d) Gypsum 7) What is the softest mineral? a) Talc b) Quartz c) Diamond d) Gypsum 8) Which rock type forms from cooling lava? a) Igneous b) Sedimentary c) Metamorphic d) Organic 9) What process forms sedimentary rocks? a) Compaction b) Melting c) Cooling d) Erosion 10) How do metamorphic rocks form? a) Heat and pressure b) Cooling magma c) Sediment deposition d) Erosion 11) What is the rock cycle? a) Rock transformation b) Weather pattern c) Water cycle d) Plant growth 12) Which rock is formed from shells? a) Limestone b) Granite c) Basalt d) Slate 13) What is the main mineral in granite? a) Quartz b) Calcite c) Gypsum d) Talc 14) Which process breaks rocks into smaller pieces? a) Weathering b) Melting c) Cooling d) Compaction 15) What is the main element in the Earth's core? a) Iron b) Silicon c) Oxygen d) Carbon

Geology and Earth Science Quiz S6E5

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