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8th Physical Science

TermDefinition
Qualative made by gather information that can be recorded using descriptive language
Quanative made by gather information that can be recorded as a number with a measurement unit
inference not a fact, but an interpretation based off of prier knowledge
Scientific Law describes what scientist expect to happen every time under a particular set of conditions
constant part of experiment that is held in the same condition for control and experiment
variable part of experiment that changes
manipulated variable a factor in a controlled experiment that is intentionally changed by the experimentor
scientific theory a well tested explanation for a wide range of observations or experimental results
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 manipulated of another variable
experiment a course of actions completed in order to test a hypothesis
control a standard to which all other levels are compared in a scientific experiment
matter anything that takes up space and has mass
Physical Properties a characteristic of a pure substance that can be observed without changing into an another substance
Chemical Properties a characteristic of a pure substance that describes its ability to change into a new substance
Elements a pure substance that can be broken down by chemical or physical means
Atoms a basic particle from which all elements are made
Weight measure of the force of gravity on an object
mass amount of matter in an object
Volume amount of space matter occupies
Calculating Volume volume= length x width x height v= L* W* H
work force exerted on an object that causes it to move
Newton the force required to move 1 kilogram 1 meter squared
force a push or pull exerted on an object
gravity the force that pulls object close to each other
newton first law An object at rest tends to stay at rest, an object in motion tends to stay 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
newton third law for every action there is an equal and opposite reaction
mechanical advantages the number of times a machine increases a force exerted on it
accuracy a given measurement agrees with the standard value for that measurement
calibration
graduated cylinder a container to measure the volume of liquids
International system of measurement system of units scientists use to measure the properties of matter
liquid definite volume but no shape
mass amount of matter in an object
matter anything that takes up space and has mass
meniscus upper surface of a column of liquid
newton- a unit of measurement force necessary to provide a mass of one kilogram
precision given set of measurements of the same sample agree with their mean
triple beam balance scale
unit a measurement
volume amount of force of gravity on an object
weight a measure of the force of
pure substance a substance made of only one kind of material having definite proportional amounts and properties
mixture matter that consists of two or more substances not chemically combined
element the simplest type of pure substance
compound two or more elements chemically combined
homogeneous mixture two or more substances not chemically combined, but appearing to be evenly blended
heterogeneous mixture two or more substances not chemically combined, but can be separated
Created by: 3132920