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8th Physical Sci
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Term | Definition |
---|---|
Qualitative | Made by gathering information that can be recorded using descriptive language. |
Quantitative | 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 observations mean. |
Scientific Law | Describes what scientist 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 experiment. |
Variable | Part of the 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 or experimental results. |
Inquiry | To ask for information. |
Responding Veriable | 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. |
Control | A standard to which all other levels are compared in a scientific experiment. |
Matter | Anything that has mass and takes up space. |
Physical Properties | A pure substance that can be observed without changing it. |
Chemical Properties | A pure substance that describes it's ability to change. |
Work | Force exerted on an object that causes it to move. |
Force | A push or pull exerted on an object |
Newton (N) | A unit of force required to move 1 kilogram 1 meter squared. |
Newton's first law | An object at rest stays at rest or an object that is moving at a speed in a straight line keeps moving at that speed unless another force acts on it. |
Newton's second law | The amount of force needed to make an object change its speed depends on the mass of the object and the acceleration required. |
Newton's third law | For every action (or force), there is an equal and opposite action (or force). |
Gravity | The force that pulls objects toward each other. |
Mechanical Advantage | The ratio of the output force produced by a machine to the applied input force. |
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 graduated cylinder, measuring cylinder or mixing cylinder is a piece of laboratory equipment used to measure the volume of a liquid. |
International System of Measure (SI) | The International System of Units is the 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 | Liquid is one of the four fundamental states of matter, and is the only state with a definite volume but no fixed shape. |
Mass | In physics, mass is a property of a physical body which determines the body's resistance to being accelerated by a force and the strength of its mutual gravitational attraction with other bodies. |
Matter | The substance or substances of which any physical object consists or is composed. |
Meniscus | The meniscus is the curve in the upper surface of a liquid close to the surface of the container. |
Newton- A unit of measure | The newton is the International System of Units (SI) derived unit of force. |
Precision | The quality, condition, or fact of being exact and accurate. |
Triple beam balance | The triple beam balance is used to measure masses very precisely. |
Unit | A quantity chosen as a standard in terms of which other quantities may be expressed. |
Volume | Volume is the quantity of three-dimensional space enclosed by some closed boundary. |
Weight | The weight of an object is usually taken to be the force on the object due to gravity. |
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 a 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 appearing non-uniform with physically distinct substances included. |