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Science voc list Q#1

QuestionAnswer 1
scientific method The process by which scientists improve their understanding of the universe.
physical science The study of matter and energy interactions, chemistry and physics.
chemistry The study of the forms, structure, interactions and reactions of matter
hypothesis A more or less new idea which needs more data or experimental repetition. An educated guess, based on known evidence, to answer a question or problem
variable A factor that influences a system
experimental variable manipulated or changed intentionally between set-ups
controlled variable not allowed to change from one set up to another
responding variable changes as a result of changing the experimental variable
data They are facts collected using the scientific method. They are not explanations. They can be measurements or descriptions of anything you noticed while doing an experiment.
unit A standard quantity used to make measurements comparable. Exs. grams or meters
metric system A decimal system of units. The naming is based on powers of ten like our decimal system, so converting within the system requires no math.
significant digits the digits from a measurement or calculation that can be reported because they correctly represent the level of precision of the tool and accuracy of the scientist.
accuracy how correctly an action is done (depends on the person)
precision how small an interval a measurement tool is capable of measuring
estimation making a reasonable guess to about where a pointer is pointing between the two closest lines on a scale.
theory A set of principles used to explain and/or make predictions about phenomena
scientific law A formula or formal statement of a phenomena observable within specified conditions which has not been disproved after many experiments and much debate
physics The study of energy, forces, and motion of objects.
technology The application of science to create a product. It is also used to mean a product of science.
Created by: phly95