PPT-Physical quantities, units and measurements

Base quantities and units Base quantity Symbol Base unit Unit symbols Instruments Mass m kilogram Kg Beam or lever balance top pan balance Length l metre m Metre rule ruler vernier. Physical quantities. Any quantity that can be quantified by measurement is a physical quantity . Most of the quantities we deal with as scientists are physical quantities and they will be the ones we will discuss throughout this topic of motion.. Why do scientists need a standard system of measurements?. Remember that science must be . repeatable. – another scientist has to able to repeat your experiment using the same amounts, concentrations, lengths, weights, etc.. Unit 1 – Introduction to Physics. Vocabulary. Physical quantities mass force. Current unit SI units. International system kilogram second. Basic quantities meter ampere. Derived quantities Kelvin mole. The properties of matter must be measured correctly and reported without ambiguity. . Value- A quantities description that includes both a number and a unit. Units- quantities defined by standards that people have agreed to use to compare one event/object to another. Golibjon. Berdiyorov. 2. Golibjon. Berdiyorov. , Room 148 Physics Building. Phone: . 860-3869/2283. e-mail: . golib@kfupm.edu.sa. www.cmt.ua.ac.be/golib/PHYS101. Syllabus and teaching strategy. Unit 1 – Introduction to Physics. Vocabulary . Symbols equation graph. word equations variables x-axis. y-axis dependent variable tangent. Independent variable gradient. y-intercept x-intercept delta (. Lecture. 1. Methods. of . Science. Ozgur. . Unal. 1. NIS – PHYSICAL SCIENCE. Lesson objectives:. Define science. Identify the steps scientists often use to solve problems. Determine dependent variables, independent variables and constants in an experiment.. Measurements and Their Uncertainty. 3.1. 3.1. Measurements are fundamental to the experimental sciences. For that reason, it is important to be able to make measurements, and to use them correctly when calculating answers.. What Is Chemistry?. Chemistry is the study of the composition, structure, and properties of matter and energy and changes that matter undergoes.. Matter is anything that occupies space and has mass.. Conversion Problems. Density. Measurements and their Uncertainty . Do any of these signs list a measurement?. - Measurements contain BOTH a . number. and a . unit. .. All measurements depend on units that serve as reference standards. The standards of measurement used in science are those of the metric system. . 3.1 Measurement and their uncertainty. Using and expressing measurements. Measurement: a . quantitiy. that has both a number and a unit.. 60 mph, 85 degrees . Farienheit. . Measurements are fundamental to the experimental sciences. Because of that, it is important to be able to make measurements and decide whether a measurement is correct. . Hajo Rijgersberg Promot iecommissie : - p rof.dr. ir. J .L. Top (promotor), - d r. D . Allemang, - dr. P. Buche, - p rof.dr. F . van Harmelen, - p rof.dr. E . van der Linden, - p rof.dr. A. Th. Schr and their Units. PHYSICAL QUANTITY . refers to a quantity that can be measured.. Measured in SI Units which means International System of Units used all over the world. PREFIX. A prefix is added to a unit to change the value of the unit. . COURSE OUTCOME . :. To . understand the basic units and unit operations in . chemical . engineering. .. Specific Outcome . 1.1.1 . Explain the various systems of units . 1.1.2 . Explain the difference between fundamental and derived units .