11.500 cubic feet is the measure of (area/volume). (Dimension/division) is a mathematical operation.Ĩ. The second is a unit for measuring time ( in M.K.S. Velocity is length (multiplied/divided) by time.Ħ. The kilogram is a unit for measuring time (in M.K.S. Foot is a unit of (area/length) in the British system of measurements.Ĥ. Unit is a (quality/quantity) adopted as a standard of measurement.Ģ.
Three practical units: ohm, ampere and volt provide standards for comparison.ġ. Electrostatic units are not used with the M.K.S.A fourth unit is required to define all practical units.An alternate absolute system is based on the dimensions: meter, kilogram and second.The original ampere was based on the magnetic effect of current instead of the present electro-chemical effect.The three practical units are defined as ohm, ampere and volt.Translate the following sentences paying attention to the Tenses of verbs. discovered the contact difference of potentials. International ampere under electric pressure of one international …………. The international watt is the energy expended per second electric current of one Ampere discovered the mechanical interaction of ………… and the law of theirĦ. primary unit for measuring electric current.Ĥ. The ohm is the ………….primary unit of electric resistance.ģ. An alternate absolute system is based on the dimensions ………….Ģ.Choose the correct lettered response to complete each numbered statement. What are the units of length in the MKS in the British system? Why is the metric system widely in use all over the world?Ĥ. Answer the questions to the text “Systems of measurements”.ģ. The seven basic units are in it: meter (m), kilogram (kg), second (s), ampere (a), Kelvin (k) mole (mol), and candle (cd). In fact the SI units are an internationally agreed coherent system of units derived from the MKS system. It is kept at the International Bureau of Weights and Measures in France. This distance is close to 10.000 kilometers or 10 7 (ten to the seventh power) meters.īy international agreement the standard meter of the world is the distance between two scratches made on a platinum-alloy bar. The standard meter of the world was defined in the terms of distance from the North pole to the equator. In the British system converting one unit to another can be carried out by shifts of a decimal point (comma in Russian writing). For example, in the British system 1 mile is equal to 1.760 yards 1 yard is equal to 3 feet, and 1 foot is equal to 12 inches.
The value of the MKS system (meter-kilogram-second) is that various units show simple and logical relationships among themselves, while the British system fps (foot-pound-second) is very complicated. Practically there are three main systems of measurements in use today: the British system of units, the Metric system of units and the SI (System of International Units).All the nations of the world use the Metric system.
Most of the physical quantities are related to length, time and mass, therefore all the systems of physical units are derived from these three fundamental units. Volume is a length times a second length. For example, velocity is length divided by time. Many of these quantities are interrelated. Much physics deals with measurements of physical quantities such as length, time, velocity, area, volume, mass, density, temperature and energy. Unit is a quantity or dimension adopted as a standard measurement.
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