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8th Physical sci

TermDefinition
Quantitative observation made by gathering information that can be recorded using descriptive language.
Qualitative 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 means.
Scientific law describes what scientist 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 variable a factor controlled in an experiment that is intentionally changed by the experimenter.
Scientific theory a well tested explanation for a wide range of observations or experimental results.
Question to ask information
Dependent variable a resulting factor in a controlled experiment that is observed and measured to see if it changes due to manipulation of another variable.
Experiment a course of action completed in order to test a hypothesis.
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 change into a different substance.
weight a measure of the force of gravity on an object.
mass the measurement of the amount of the matter in an object.
Newton unit of measure of force required to accelerate on kilogram of mass by one meter squared
work activity involving mental or physical effort done in order to achieve a purpose or result.
force strength or energy as an attribute of physical action or movement
gravity Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull is.
Newtons first law An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newtons second law Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
Newtons third law For every action there is an equal and opposite re-action.
accuracy the quality or state of being correct or precise.: "we have confidence in the accuracy of the statistics" "she hit the ball with great accuracy
calibration the action or process of calibrating an instrument or experimental readings.
Graduated cylinder A graduated cylinder is a piece of laboratory equipment used to measure the volume of a liquid.
liquid Liquid is one of the four fundamental states of matter, and is the only state with a definite volume but no fixed shape.
mass a coherent, typically large body of matter with no definite shape.
matter physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.?
International system of measurement a system of physical units ( SI Units ) based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten.
meniscus the curved upper surface of a liquid in a tube.
newton- a unit of measurement newton, abbr. N, unit of force in the mks system of units, which is based on the metric system; it is the force that produces an acceleration of 1 meter per second per second when exerted on a mass of 1 kilogram. The newton is named for Sir Isaac Newton.
precision the quality, condition, or fact of being exact and accurate.
unit n individual thing or person regarded as single and complete but which can also form an individual component of a larger or more complex whole.
volume the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.
weight a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
matter anything that takes up space
mixture matter that consist of two or more substances not chemically combined
element the simplest type of pure substance
Homogeneous mixture two or more substances not chemically combined, but appearing to be blended equally.
heterogeneous mixture two or more mixtures not chemically combined, and appearing no uniform with physical distinct substances included.
Created by: deshay__36