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8th PSI

TermDefinition
Qualitative Observation Made by gathering information that can be recorded using discriptive language
Quantitative Observation Made by gathering information that can be recorded as a number wit a measurement unit.
Inference not a fact, but an interpretation of what the direct observation means.
Scientific 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
Manipulated 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
Inquiry To ask information
Responding 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.
Matter Anything that has mass and takes up space
Weight The measure of the force of gravity on an object
Physical Change A characteristic of a substance that can be changed without changing it into other substances
Chemical Change A characteristic of a substance that describes they way it can change into another substance.
Mechanical Advantage The ratio of the output force produced by a machine to the applied input force
Newton A unit of force required to move 1 kilogram 1 meter
Force A push or pull exerted on an object
Newtons first law An object at rest stays at rest or an object that is moving at a speed in a straight line keeps moving at that speed unless another force acts on it.
Newtons second law The amount of force needed to make an object change its speed depends on the mass of the object and the acceleration required.
Newtons third law For every action (or force), there is an equal and opposite reaction (or force)
Work Force exerted on an object that causes it to move
Gravity Force that pulls object towards each other
Accuracy The condition or quality of being true, correct, or exact freedom from error or defect; precision or exactness
Calibration The action or process of calibrating an instrument or experimental readings
Graduated Cylinder piece of laboratory equipment used to measure volume of a liquid.
International System Of Measurment A complete metric system of units or measurements for scientist fundamental quantities are length (meter) mass (kilogram) time (second)
Liquid Having a consistency like that of water or oil, flowing freely but of a consistent volume
Meniscus The curved upper surface of a liquid in a tube.
Newton-a unit of measure You measure the unit of force in Newtons
Precision The quality condition or fact or being exact or accurate
Triple Beam Balance Typical mechanical balance has a beam supported by a fulculm
Unit chosen by a standard term in which a quantity is measured.
Mass Typically large body or matter.
Pure Substance a substance made of only one kind of material having definate proportional amounts of properties
Mixture matter that consist 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 and appearing to be evenly blended
Heterogeneous Mixture two or more substances not chemically combined and appearing non-uniform with physically distinct substances included.
Created by: genovaa_
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