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III Answer the questions:

1. Who proposed the creation of a decimal metrical system?

2. When did Jean Packard, a French astronomer, propose one unit of length based on pendulum?

3. When was the metric system adopted?

4. When was the metric system officially accepted by 35 nations?

5. Who created a system of units that was simultaneously simple and scientifically based on the proposal of Mouton?

IV Complete the sentences:

1. The … created a system of units that was …simple and scientific based…Mouton.

2. In … the complete establishment of Metric System … on the 1st of April in 1959.

3. The ...of many European scientists for … of a new single and uniform metrical system fulfilled at the… of French Revolution.

4. The duty of the… in France is the permanent secretariat of the Treaty of Meter as well as the exchange of information referring to the use and the … of metrical system.

5. …the sixteenth (XVI) proposed the …of a decimal …system.

V Find the English equivalents to the words:

Маятник, розділятися на групи, десятинна система, компактність, бути в курсі, меридіан, постійний, синхронно, врівноважені дії

VI Match the English words with their Ukrainian equivalents:

1. immutable a.маятник

2. pendulum b.десятинна система

3. earthly c.бути в курсі

4. decimal d.сильне бажання досягти чогось

5. density e.земний

6. simultaneously f.веселка

7. to be aware g.синхронно

8. aspiration h.світло

9. arc i.постійний

10. light g.компактність

VII True or false statements:

1. The meter resulted from the volume of cube with length of each side equal to 10 centimeters.

2. Also the basic unit of weight was the kilogram.

3. Multiples of square meter are: the Are, the Acre and the hectare.

4. King Louis the sixteenth (XVI) proposed the creation of a decimal metrical system.

5. Multiple of square meter is the Are.

VIII Translate into English:

1. Король Луї XVI запропонував створення десяткової метричної системи.

2. Багато Європейських учених прагнули створити нову і загальноприйняту метричну систему.

3. У Греції прийняття метричної системи відбулося 1-го квітня 1959 року.

4. Основною одиницею довжини в метричній системі був метр.

5. Офіційно, 35 країн світу ратифікували метричну систему.

IX Make up sentences with the terms:

Simultaneously, metric system, arc of meridian, decimal, a basic unit of weight, kilogram, aspiration, scientific discoveries, pendulum, counterbalances, Are.

X Speak on the topic using the following words and word-combinations:

The aspiration, French Revolution, King Louis the sixteenth, Meter Convention, decimal metrical system, meter, International System of Units, the need for existence, oka, kilogram, complete establishment, officially accepted, multiples of square meter, a thin arc of meridian.

TEXT B

I Read and remember:

1. frustrate – розчаруватися

2. neatly – уміло, чітко

3. familiarity – фамільярність

II Read text and define the main idea of it: small-unit metric system

The small-unit metric system is based on three fundamental units: the centimeter, which quantifies displacement, the gram, which quantifies mass and the second, which quantifies time.

The small-unit metric system is so-called because one centimeter is equal to 0.01 meter (10 -2 m), and one gram is equal to 0.001 kilogram (10 -3 kg). The CGS system, like the metric system, was originally developed by scientists who were frustrated with the English (foot-pound-second) system. The CGS units of displacement and mass lend themselves neatly to calculations in scientific notation, while English units generally do not. Time remains somewhat messy in all systems; there are 60 seconds in a minute, 60 minutes in an hour, and 24 hours in a day.

The Standard International System of Units has officially supplanted the small-unit metric system as well as the metric system. But it is good to have passing familiarity with the small-unit metric system, because that scheme is still used by some astronomers and physicists, and many older scientific books and papers were written with a preference for it. Today's International System provides formal definitions for the meter, kilogram, second and also specifies and defines four additional units: the Kelvin for temperature, the ampere for electric current, the candela for luminous intensity, and the mole for material quantity.