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Change of phase A change from one state of matter to another without a change in chemical composition. chemical change A change in which new or different kinds of matter are formed. comparative anatomy the study of similarities and differences in the anatomy of organisms conduction The transfer of thermal energy by direct contact between objects convection Theprocess by which heat energy us transferred through liquids and gases crustal plate A part of the Earth's outer surface that shifts during an earthquake Custom made Made according to the specifications of an individual as opposed to mass made decoding Converting code into ordinary language dense metallic core referring to the center of the Earth, which has a Dense Metallic Core density The amount of matter in a given space deposition of sediments relating to rocks formed by the deposition of sediment encoding converting plain text into code equilibrium a state of balance between opposing forces or actions glaciation the process of covering the earth with glaciers or masses of ice hierarchical classified according to various criteria into successive levels or layers hot convecting mantle The slow creeping of the Earth's rocky mantle - the force that moves crustal plates lithosphere the solid part of the earth, made up of the upper part of the mantle and the crust mass The amount or quantiy of matter in an object mechanical fastener A device that attached two materials together - such as nails, screws, staples mixture Two or more substances that are blended, but not bonded together. A mixture can be separated by physical means organelles tiny cell structures that carry out specific functions within the cell physical change a change in matter that changes physical properties, but does not produce a different kind of matter product a substance formed by a chemical reaction prototype the first model of a product that is used as a pattern for making more of that product radiation Energy that travels in waves and can pass through empty space as well as some objects - the release and transfer of energy in wavelengths of heat and light relative position location of an object as described in relation to a reference point substance A single kind of matter that has distinct physical and chemical properties transformed To undergo a change, either in appearance or in character unicellular Having or consisting of a single cell volume the amount of space that an object occupies weathering The process in which rocks are broken down into smaller pieces by ice, water, wind, temperature changes, plants, animals or chemicals weight The measure of the pull of gravity on an object