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8th Physical Science

qualitative observation made by gathering information that can be recorded usuing] 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 observation means
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 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 in which all other levels are compared in a scientific experiment
Newton or N a unit of force required to move 1 kilogram 1 meter squared
work force exerted on an object that causes it to moce
gravity force that pulls objects towards each other
force a push or pull exerted on an object
Newton's Law one an object at rest stays at rest or an object that is moving at a velocity in a straight kine keeps moving at the velocity unless anther force acts on it
Newton's Law two the amount of force needed to make an object change its speed depends on the mass of the object and the acceleration required
Newton's Law three for every action/force, there is an equal and opposite action/force
mechanical advantage the ratio of the output force produced by a machine to the applied inputforce
Created by: 3083412