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8th Physical Science

TermDefinition
Qualitative made by gathering information that can be recorded using descriptive language
Quantitative made by gathering information that can be recorded as a number with a measurement unit
Inference not a fact, but an interpretation of what the direct observations mean
Scientific Law describes what scientists 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
MV 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 for information
DV a resulting factor in a controlled experiment that is observed and measured to see if it changes due to the manipulation of another variable
Experimant 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 has mass and takes up space
Physical Properties a characteristic of a pure substance that can be observed WITHOUT CHANGING IT into another substance
Chemical Properties a characteristic of a pure substance that describes its ability to change into a differnt substance
Newton a unit of force required to move 1 kilogram 1 meter squared
Work force exerted on an object that causes it to move
Force a push or pull exerted on an object
Gravity a force that attracts objects
Newtons 1st 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 2nd 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 3rd law for ever action (or force), there is an equal and opposite action (or force)
Mechanical Advantage the ratio of the output force produced by a machine to the applied inputforce
accuracy the extent to which a given measurement agrees with the standard value for that measurement.
calibration to divide or mark with gradations, graduations, or other indexes of degree, quantity, etc., as on a thermometer, measuring cup, or the like
graduated cylinder a narrow, cylindrical container marked with horizontal lines to represent units of measurement and used to precisely measure the volume of liquids.
International System of Measurement (abbreviated SI from French: Le Système International d'Unités) is the modern form of the metric system and is the world's most widely used system of measurement, used in both everyday commerce and science.
liquid having a consistency like that of water or oil, i.e., flowing freely but of constant volume
mass a body of coherent matter, usually of indefinite shape and often of considerable size
matter the substance or substances of which any physical object consists or is composed
meniscus the curve of the water in a graduated cylinder
Newton the standard unit of force in the International System of Units (SI), equal to the force that produces an acceleration of one meter per second per second on a mass of one kilogram.
precision the state or quality of being precise.
triple beam balance an instrument used to measure weight
unit a single thing
volume the amount of space, measured in cubic units, that an object or substance occupies. a mass or quantity, especially a large quantity, of something
weight the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity: commonly taken, in a region of constant gravitational acceleration, as a measure of mass
matter anything that has mass and volume (takes up space)
pure substance a substance made of only one kind of material having 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 every blaended
heterogeneous mixture two or more substances not chemically combined, and appearing non-uniform with physically distint substances included
Created by: samantha.peel