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8th Physical Sci

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.
theory a well tested explanation for a wide range of observations or experimental results.
inquiry to ask for information
dependent variable a resulting factor in a 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.
physical properties a characteristic of a pure substance that can be observed without changing it to another substance.
chemical properties a characteristic of a pure substance that describes its ability to changes into different substances.
elements the simplest substances.
atoms the basic particle from which all elements are made.
weight a measure of the force of gravity on an object.
mass the measurement of the amount of matter in the object.
units of mass grams
volume the amount of space the matter occupies.
force a push or pull exerted on an object.
work force exerted on an object that cause it to move.
gravity the force that pulls objects towards each other.
newton a unit of force required to move 1 kilogram 1 mass squared.
Newton's First Law an object at rest stay at rest. An object in motion stays at motion unless another force acts on it.
Newton's Second Law The more mass you have, the more force is needed.
Newton's Third Law For every 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 input force.
Created by: Kaylynpena