Earth's Materials & Rock Cycle Crossword Puzzle

QUESTIONS LIST:

• magma : molten rock; found in the mantle
• compaction : part of the rock cycle; squeezing of sediment together to form solid rocks by means of pressure
• streak : the color of a mineral when it is crushed into powder. use a porcelain tile to test this characteristic.
• earths layers : the crust, mantle, inner core, and outer core are all of _
• sedimentary rock : rocks deposited in layers; commonly contain fossils
• outer core : the liquid layer of earth above the inner core
• subduction : the sideways and downward movement of the edge of a tectonic plate into the mantle beneath another plate.
• lithosphere : the rigid outer part of the earth, consisting of the crust and upper mantle.
• luster : the way light interacts with the surface of a crystal, rock, or mineral
• mineral : a solid, inorganic substance of natural occurrence. usually of crystalline form
• inner core : the innermost layer of the earth
• igneous rock : result of the partial melting of rocks within the mantle and crust; also known as volcanic rocks
• metamorphic rock : _ arises from the transformation of existing rock types, in a process called metamorphism
• asthenosphere : the upper layer of the earth's mantle, below the lithosphere; has plasticity
• cementation : the hardening and welding of clastic sediments; like the glue for sedimentary rocks
• rock cycle : an idealized cycle of processes undergone by rocks in the earth's crust
• mantle : layer of earth containing the asthenosphere; thickest layer of earth