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8th physical science

8th grade physical science

TermDefinition
qualitative observatition made by gathering information that can be recorded using descriptive langue
quantitative observation made by gathering information that can be recorded as a number with a measurement unit
Inference not a fact but interpretation of what the direct observation means
Scientific law describes what scientist expect to happen every time under same conditions
constant part of experiment that is held the same conditions for control and experimental
variable part of experiment that changes
manipulated variable a factor in a controlled experment that is intentionally changed by expermenter
Theroy a well tested explanation for wide range of observation experimental results
question/inquiry ask for information
dependent a result factor in a controlled experiment that is observed and measured to see if it changes due to manipulation of another varible
experiment a course of action completed in order to test hypothesis
control a standerd to which all other levels are compared in a scientific experment
physical properties a characteristic of a pure substance that can be observed without changing
chemical properties a chartistic of a pure substance that describes its ability to change in a different substance
elements nONE
atoms the basic particle from which all element are made
weight a measure of the force of gravity on object
mass How much madder is in object
unit ofmass none
international systems of units None
voulme the amount of space that madder occupies
calculating volume LxWxH
gravity force that pulls object towards each other
work force exerted on an object that causes it to move
force a push or pull on object
newton A unit of measure of force required to move 1 kilogram 1 meter squared
mechanical advantge The ratio of the output force produced by a machine to applied input force
newtons 1 an object in motion tends to stay in motion while an object at rest seems to stay at rest
newtons 2 heavier objects requires more force to move some distance
newtons 3 every force has an equal or opposite reaction
accuracy the quality or state of being correct or precise
calibration the action or process of calibrating an instrument or experimental readings.
graduated cylinder a measurement of volume of liquid
international system of meausrement metric system of meausement
liquid having a consistency like that of water or oil, i.e., flowing freely but of constant volume.
meniscus the point that you dips down that you measure
newtons unit of measurment The newton is the International System of Units derived unit of force. It is named after Isaac Newton in recognition of his work on classical mechanics, specifically Newton's second law of motion.
prescison the quality, condition, or fact of being exact and accurate.
triple beam balnce The Triple Beam Balance is a typical mechanical balance. It has a beam which is supported by a fulcrum. On one side is a pan on which the object is placed. On the other side, the beam is split into three parallel beams , each supporting one weight.
unit a quantity chosen as a standard in terms of which other quantities may be expressed.
voulme the amount of space object occpies
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 has mass and voulme
mixture matter that consistsof two or more substances not chemically combiened
compund two or more elements chemically combiened
pure substance a substance made of only one kind of material having definite proportional amounts and propertys
element simplest pure substance
homogeneous two or more substances not chemically combiened but blended, milk , coll aid
heterogeneous two or more sunbstances not chemically combied appering non uniform with physically distinct substances include, fruit salad
Created by: 3081980