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Details Title: TAKS Terms to KNOW! Description: Basic Science Terms Total Flash Cards: 55 Created: 04/12/2004 13:34:26	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Acceleration Definition A measure of the rate of change in the speed of an object over time. Term Adaptation Definition A beneficial trait that enables species to survive and reproduce. Term Amplitude Definition The "height" of a wavethe distance between the midpoint and the top of a crest or bottom of a trough. Term Atom Definition The basic building block of matter that has all the properties of matter. Term Bacteria Definition Single-celled organisms that lack a nucleus. Term Biodiversity Definition A measure of the variety of living things in an ecosystem. Term Biomass Definition An estimate of the biological mass of all living things in a given area. Term Buoyancy Definition A force that results when objects displace a liquid or gas. Term Carbon cycle Definition A summary of how carbon moves through an ecosystem. Term Cell Definition The basic building block of living things that can perform basic life. functions. Term Chemical change Definition Any change that alters the chemical properties of the atoms or molecules in an object. Term Chemical equation Definition A series of chemical formulas and symbols that show the reactants and products in a reaction. Term Chemical formula Definition Symbols and subscripts that identify the type and number of elements in a substance. Term Chloroplast Definition An organelle in a plant cell that carries out photosynthesis. Term Circulatory system Definition A human body system that transports nutrients and wastes throughout the body. Term Coefficient Definition Whole number multiplier that appears before a chemical formula in an equation that is used to balance the equation. Term Commensalism Definition A symbiotic relationship where one organism benefits without harming the other. Term Conclusion Definition An interpretation based on research, experience, and data. Term Conduction Definition A method of transferring heat that involves direct contact. Term Confidence Definition The level of certainty one feels that data, inferences, and theories reflect an accurate picture of the real world. Term Control group Definition Part of an experiment that is not subjected to the variable so that it can be compared to the experimental group. Term Convection Definition A method of transferring heat where the movement of a liquid or gas carries the heat. Term Covalent bond Definition A bond that involves sharing electrons between two or more atoms. Term Density Definition A property of matter equal to the mass divided by the volume. Term Dependent Variable Definition The variable that measures the effects of changes in the independent variable. Term Digestive system Definition A system that breaks down food and releases the stored energy. Term Dissociate Definition When an ionic compound separates into ions in a solution. Term DNA Definition A nucleic acid found in cells that A nucleic acid found in cells that Carries the blueprints for all of the cell's activities and stores and transmits genetic information. Term Ecosystem Definition All of the living and nonliving parts interacting in a given area. Term Electrolyte Definition A solution containing ions that conducts electricity. Term Electronegativity Definition A measure of how strongly an atom will attract an electron. Term Element Definition A substance made of only one kind of atom. Term Endoplasmic reticulum Definition An organelle that transports materials through the cell. Term Energy Definition The ability to do work. Term Evolution Definition A process by which populations of living things change over time. Term Experiment Definition An artificial situation where a scientist controls the variables. Term Experimental group Definition The part of an experiment subjected to a change in the independent variable. Term Extinction Definition When all members of a species die out. Term Fluid Definition A substance that flows, taking the shape of the container that holds it, including gases and liquids. Term Food chain Definition The feeding order among populations that prey on one another. Term Food web Definition Two or more interconnected food chains. Term Frequency Definition The number of waves that pass a given point in a given amount of time. Term Glucose Definition A molecule created during photosynthesis that stores large amounts of energy. Term Glycolysis Definition A process that breaks down glucose into pyruvic acid. Term Group Definition One of eighteen vertical columns in the Periodic Table. Term Heat Definition The transfer of energy as a result of a temperature difference. Term Homeostasis Definition The state in which a The state in which a natural system is balanced and tends to maintain that balance; the ability of a living thing to maintain the constant internal environment needed to function and survive. Term Hypothesis Definition A possible, testable explanation to a scientific question. Term Immune system Definition A human body system that fights disease and invaders. Inclined plane A simple machine like a ramp. Term Independent variable Definition The variable changed by the experimenter. Term Inference Definition A deduction or assumption based on observation. Term Integumentary system Definition (skin) A system that provides a barrier between the organism and the environment. Term Interference Definition The process by which two or more waves interact. Term Investigation Definition The systematic approach to answering scientific questions. Term Ion Definition A charged atom that has gained or lost electrons.