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6th Grade Physical Science Final 1

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Across
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The force that one surface exerts on another when the tow surfaces rub against each other
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The study of properties of matter and how matter changes
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A material that does not conduct heat well; a material in which charges cannot easily flow
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A set of tones and overtones combined in ways that are pleasing
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A chart of the elements showing the repeating pattern of their properties
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Anything that has mass and occupies space
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A form of the element carbon in which the atoms are arranged in a crystal structure. It is also found on a wedding ring
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The amount of one material in a certain volume of another material
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A device that produces a narrow beam of coherent light
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The state in which one object's distance from another is changing
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A mixture containing small, undissolved particles that do not settle out
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The amount of energy per second carried through a unit area by a wave
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An atom or group of atoms that has become electrically charged
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The process that breaks down complex molecules of food into smaller molecules
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A well-mixed mixture containing a solvent and at least one solute that has the same properties
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A person who is trained to use both technological and scientific knowledge to solve practical problems
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Unit of measurement for frequency
Down
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The force exerted on a surface divided by the total area over which the force is exerted.
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Tow or more substances that are mixed together, but not chemically combined
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A reflected sound wave
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The ratio of the mass of a substance to its volume
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an upward force
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The basic particle from which all elements are made
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A push or pull exerted on an object
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Perception of the frequency lf a sound
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The change in frequency of a wave as its source moves in relation to an observer
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The new food pyramid is called this
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A force that holds atoms together
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The temperature at which a substance changes from a solid to a liquid
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The changes from gaseous to liquid state of matter
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A substance formed as a chemical reaction
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The rate at which velocity changes
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The change of state from a liquid to a gas
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The temperature at which a substance changes from a liquid to a gas
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A covalent bond in which electrons are shared unequally
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Sound waves with frequencies above 20,000Hz
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An international computer network that shares data, information, and news
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The ability to do work or cause change
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Any material that attracts iron and materials that contain iron