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8th physical science

qualitative observation made by gathering information that can be recorded using descriptive language
quantitative observation 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
manipulative 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
inquiry to ask for information
dependent responding a resulting factor in a controlled experiment that is observed and measured to see if it changes due to the manipulation of another varible
experiment a course of action completed in order to test a hypothesis
controll a standard to which all other levels are compared in a scientific experiment
matter anything that has a mass and takes up space
physical properies characteristics of a pure substance that can be observed with out changing into another
chemical properties a characteristic of a pure substance that describes its ability to change into a different substance
elements a pure substance that can not be broken down
atoms basic particle from which all elements are made
weight force of gravity
mass amount of matter in the object
volume the amount of space an object occupies
work force exerted on an object that causes it to move forward
newton a unit of force required to move 1 kilogram 1 meter squared
newton 1 object at rest stays at rest or an object that is moving at speed in a straight line keeps moving at that speed unless another force acts on it
newton 2 amount of force needed to make an object change its speed depends on the mass of the object and the excelation required.
newton 3 for every action (force), there is an equal and opposite action (force).
force a push or pull exerted on an object.
gravity force that pulls object towards each other.
Created by: jesss_