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8th physical science
Term | Definition |
---|---|
physical properties | a physical change of a substance that does not change what the substance is |
chemical properties | a change to a substance that changes the substance into something else |
matter | anything that has mass or takes up space |
mass | amount of space taken up |
weight | measure of force of gravity on an object |
qualitative | made by gathering information that can be recorded using descriptive language |
quanitative | made by gathering information that can be recorded as a number with a measurement unit |
infrence | not a fact, but an interpretation of what the direct observation means |
scientific law | what scientists 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 an experiment that changes |
manipulated variable | a factor in a controlled experiment that is intentionally changed by the experimenter. |
scientific theory | a well tested explanation for a wide range of observations. |
scientific inquiry | to ask for information |
dependent variable | a resulting factor in a controlled experiment that is observed and measured to see if it changes due to the manipulation of another variable |
experiment | a course of action completed in order to test a hypothesis |
controll | a slandered to which all other levels are compared in a scientific experiment |
gravity | force pushing down on an object |
work | force exerted on an object that causes it to move |
force | a push or pull exerted on an object |
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 piece of laboratory equipment used to measure the volume of a liquid. |
international system of measurment | modern form of the metric system and is the world's most widely used system of measurement, used in both everyday commerce and science. |
liquid | one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape. |
meniscus | the curved upper surface of a liquid in a tube. |
newton-a unit of measurment | force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second. |
unit | an individual thing or person regarded as single and complete but which can also form an individual component of a larger or more complex whole. |
triple bean balance | is a typical mechanical balance. It has a beam which is supported by a fulcrum. |
precision | the quality, condition, or fact of being exact and accurate. |