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8th physical science

matter anything that 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 different substance
elements a pure substance that cannot be broken down into other substances by chemical or physical means
atoms the basic particle from which all elements are made
weight a measure of the force of gravity on an object
mass a measure of how much matter is in an object
volume the amount of space an object occupies
qualitative observations made by gathering information that can be recorded using descriptive language
quantitative observations 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 experiment
variable part of the experiment that changes
manipulated variable a factor in a controlled experiment that is intentionally changed by the experimenter
scientific theory a well tested explanation for a wide range of observations or experimental results
question/inquiry to ask for information
responding variable a resulting factor in an controlled experiment that is observed and measured to see if it changes due to the manipulation of another variable
experiment a course of an action completed in order to test a hypothesis
control a standard to which all other levels are compared in a scientific experiment
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 pulls objects towards each other
newtons 1 a natural tendency of objects to keep on doing what they are doing
newtons 2 acceleration is produced when force acts on mass (heavier objects take more force to move the same distance as lighter objects)
newtons 3 for every action there is an opposite re-action
accuracy the extent to which a given measurement agrees with the standard value for that measurement.
calibration to determine, check, or rectify the graduation of (any instrument giving quantitative measurements).
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 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 composed of molecules that move freely among themselves but do not tend to separate like those of gases; neither gaseous nor solid.
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 a crescent or a crescent-shaped body.
newton a unit of measurement
precision the state or quality of being precise.
triple beam balance an inexpensive tool used in all sorts of environments, including classrooms, scientific laboratories, outer space, food stores and anywhere else where the mass of something must be measured.
unit a single thing or person.
volume the amount of space, measured in cubic units, that an object or substance occupies.
weight the amount or quantity of heaviness or mass; amount a thing weighs.
Created by: leigha475