1) The rock that forms Earth's outer layer a) Rock Cycle b) Crust c) Outer core d) Humus 2) A layer of hot rock a) Mantle b) Erosion c) Crystal d) Inner core 3) A layer of molten metal surrounding the inner core a) Crystal b) Mechanical weathering c) Outer core d) Crust 4) A dense ball of solid metal a) Sedimentary rock b) Crystal c) Inner core d) Rock Cycle 5) A naturally occurring solid that can form by inorganic processes and has a crystal structure and definite chemical composition a) Mantle b) Metamorphic rock c) Mineral d) Humus 6) The repeating pattern of a mineral's particles forms a solid. a) Crystal b) Metamorphic rock c) Outer core d) Rock Cycle 7) Rock that forms from cooled magma or lava a) Outer core b) Erosion c) Igneous rock d) Rock Cycle 8) Forms when small particles of rocks or the remains of plants and animals are pressed and cemented together a) Metamorphic rock b) Chemical weathering c) Crystal d) Sedimentary rock 9) Forms when a rock is changed by heat or pressure or by chemical reactions a) Metamorphic rock b) Mineral c) Mechanical weathering d) Rock Cycle 10) The series of processes that occur on Earth's surface and in the crust and mantle that slowly change rocks from one kind to another a) Rock Cycle b) Igneous rock c) Soil d) Mechanical weathering 11) This involves the removal of rock particles by wind, water, ice, or gravity. a) Erosion b) Crystal c) Mantle d) Mechanical weathering 12) The type of weathering in which a rock is physically broken into smaller pieces a) Chemical weathering b) Igneous rock c) Outer core d) Mechanical weathering 13) The process that breaks down rocks through chemical change a) Outer core b) Sedimentary rock c) Chemical weathering d) Soil 14) The loose, weathered material on Earth's surfaces in which plants grow a) Erosion b) Soil c) Mantle d) Chemical weathering 15) A dark-colored substance that forms when plant and animal remains decay a) Humus b) Rock Cycle c) Inner core d) Soil

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