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8th physical science
8th grade physical science
Term | Definition |
---|---|
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 |