MSA Review Vocabulary words D-F
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| Data: | Collected information which can be quantitative (numerical) or qualitative (descriptive). Factual information used as a basis for reasoning, discussion, or calculation.
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| Decomposer: | An organism that obtains energy from decaying organic material. (See Food chain, Food web, Consumer).
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| Density: | The amount of material an object has in a specific amount of space.
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| Dependent variable: | Factor whose value depends on the change the experimenter makes to the independent variable. It is the effect resulting from the scientific investigation. This quantity is plotted along the y-axis of a graph.
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| Deposition: | Process by which sediments are deposited in a new location.
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| Disease: | A condition of the body in which there is incorrect function due to heredity, infection, diet, or environment.
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| Displacement: | One substance or object moving another substance or object, or taking its place.
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| Diversity of species: | The number of different species present in an area.
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| Ductility: | The ability of a substance to be stretched.
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| Earthquake: | The moving and shaking of part of Earth's crust.
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| Ecosystem: | A group/community of organisms interacting with their environment.
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| El Nino: | A variation in worldwide weather patterns that recurs every three to five years and that is caused by changes in the wind, conditions over the Eastern Pacific Oceans.
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| Electric circuit: | Continuous path that can be followed by charged particles.
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| Electric current: | The flow of charged particles from one place to another.
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| Electrical conductivity: | A property of a mineral to transmit electricity.
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| Electrical energy: | Energy of electrical charges as a result of their position or motion.
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| Electricity: | A general term for the physical phenomena that arises from the interaction of electric charges.
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| Electron: | The negatively charged particle that moves around the nucleus of an atom.
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| Element: | A substance that consists of only one kind of atom and cannot be broken down into simpler parts during a chemical reaction.
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| Energy: | The ability to cause matter to move or change.
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| Energy transformation: | When energy changes from one type to another.
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| Environment: | The physical surroundings of an organism which includes the living and nonliving components.
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| Erosion: | The carrying away of weathered soil, rock, and other materials on the Earth's surface by gravity, water, and wind.
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| Estuary: | A coastal body of water that connects to the oceans so that fresh water from a river mixes with saltwater from the oceans, such as in the Chesapeake Bay.
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| Evaporation: | Change of matter from a liquid state to a gaseous state at a temperature below its boiling point.
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| Evolution: | Changes in species as a consequence of processes such as mutation and natural selection.
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| Expand: | When most substances are heated their molecules move faster and further apart causing them to increase.
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| Extinction: | The elimination of a species (also applicable to levels other than species) due to natural processes or human activity.
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| Faulting: | The process of movement along a break or crack in Earth's crust.
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| Filtration: | Process of separating a liquid and a solid by pouring the mixture through a fine mesh.
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| Flooding: | An overflowing of a body of water onto normally dry land.
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| Fluorescence: | A property of a mineral to glow with certain colors when exposed to an ultraviolet light.
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| Folding: | The process of bending rock layers in Earth's crust.
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| Food: | Scientific: substances that provide carbohydrates, lipids, and proteins as an energy source to organisms.
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| Food chain: | The feeding relationships of species that transfer energy through the organisms in a community.
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| Food web: | The complex interconnection of food chains in an ecosystem. (Compare Food chain)
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| Force: | A push or a pull applied to an object.
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| Fossil: | The remains or imprint of a prehistoric plant or animal.
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| Fracture: | The property of a mineral in which it breaks along rough, jagged surfaces.
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| Fragmentation: | The division of habitats that formerly occupied large, continuous areas into smaller areas by roads, fields, housing developments, and other human activities.
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| Frequency: | The number of repetitions in a given interval of time.
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| Friction: | The force that acts between materials that touch as they move past each other. Friction is caused by irregularities in the surface of objects that are touching.
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| Front: | A boundary between air masses that have different temperatures and humidity. It is usually the site of unsettled weather conditions.
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