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8th Physical Sci
| Term | Definition |
|---|---|
| Qualitative Observation | Made by gathering information that can be recorded using descriptive language |
| Quantitative 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 observation means |
| Scientific Law | Describes what scientists expect to happen every times 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 |
| Manipulated Variable | A factor in a controlled experiment that is intentionally changed by the experimentor |
| Theory | a well tested explanation for a wide range of observations or experimental results |
| Question | To ask for information |
| Responding Variable | A resulting factor |
| Experiment | A course of action completed in order to test a hypothesis |
| Control | A standard to which all other levels are compared in a scientific experiment |
| Matter | Has mass takes up space |
| Physical Properties | A characteristic of a pure substance that can be observed without changing it into another substance |
| Chemical Properties | A characteristic of a pure substance that describes its ability to change into a different substance |
| Work | Force exerted on an object that causes it to move |
| Force | A push or pull exerted on an object |
| Gravity | Force that pulls object towards each other |
| Newton | A unit of force required to move 1 kilogram 1 meter squared |
| Newton's Law 1 | An object at rest stays at rest or an object that is moving at a velocity in a in a straight line keeps moving at that velocity unless another object acts on it |
| Newton's Law 2 | The amount of force needed to make an object change its speed depends on the mass of the object and the acceleration required |
| Newtons"s Law 3 | For every action(or force), there is an equal and opposite action(or force) |
| Mechanical Advantage | The ratio of the output force produced by a machine to the applied input force |
| Accuracy | The extent to which a given measurement agrees with the standard value for that measurement. |
| Calibration | |
| Graduated Cylinder | A narrow, cylindrical container marked with horizontal lines to represent units of measurement and used to precisely measure the volume of liquids |
| International System of Measurement | |
| Liquid | Composed of molecules that move freely among themselves but do not tend to separate like those of gases; neither gaseous nor solid |
| Matter | The substance or substances of which any physical object consists or is composed |
| Mass | A body of coherent matter, usually of indefinite shape and often of considerable size |
| Meniscus | The convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension |
| Newton | A unit of measurement |
| Percision | The state or quality of being precise |
| Triple Beam 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 | Any group of things or persons regarded as an entity |
| Volume | Is the quantity of three-dimensional space enclosed by some closed boundary, for example, the space that a substance (solid, liquid, gas, or plasma) or shape occupies or contains |
| Weight | The force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity: commonly taken, in a region of constant gravitational acceleration, as a measure of mass. |
| Pure Substance | A substance made of only one kind of material having definite shape proportional amounts and properties |
| Mixture | Matter that consist 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, and appear non- uniform with physical |
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xoxo_marissa41
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