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science 8

TermDefinition
Qualitative Made by gathering information that can be recorded using descriptive language.
Quanitative Made by gathering information that can be recorded as a number with a measurement unit.
Law Describes what scientist expect to happen every time under a particular set of conditions.
constant Part of an experiment that is held in the same condition for control and experimental.
variable Part of the experiment that changes.
independent variable A factor in a controlled experiment that is intentionally changed by the experimenter.
theory A well tested explanation for a wide range of observations or experimental results.
Dependent Variable A resulting factor in a controlled experiment that is observed and measured to see if it changes due to the manipulation of another variable.
Experiment A course of action completed in order to test a hypothesis.
Control A standard to which all other levels are compared in a scientific experiment.
Inferance Not a fact, but an interpretation of what the direct observations mean.
Matter Anything that has mass and takes up space.
Physical Properties Any changes that alters form or appearance of matter but does not make up any substance matter into a different substance.
Chemical Properties A change in matter that produces one or more new substance.
Weight Pull of gravity on an object.
Mass Matter in an object.
Units of Mass g for grams
Accuracy The extent to which a given measurement agrees with the standard value for that measurement.
Calibration To mark off lines on measuring equipment for the desired unit.
Graduated Cylinder Equipment used to measure liquid volume
International System of Measurement
Liquid Has a definite volume but no shape of its own.
Mass The mass of matter (atoms) in a substance; measured in grams and kilograms
Matter Anything that has mass and volume (takes up space).
Meniscus The curve on the upper surface of a liquid in a container caused by surface tension
Newton-a unit of measurement A unit of force required to move 1 kilogram 1 meter squared.
Precision The amount of detail or refinement in measurement.
Triple Beam Balance
Unit A single, undivided whole; a quantity chosen as a standard for measurement.
Volume Amount of space an object takes up.
Weight A measure of the force of gravity on an object.
Matter Anything that has mass and volume (takes up space).
Pure Substance A substance made of only one kind of material having a definite proportional amounts and properties.
Mixture Matter that consists of two or more substances not chemically combined.
Element The simplest type of pure substance.
Compound Two or more elements chemically combined.
Homogeneous Mixture Two or more substances not chemically combined, but appearing to be evenly blended.
Heterogeneous Mixture Two or more substances not chemically combined and appearing non-uniform with physically distinct substance included.
Created by: ashstaneart