Katalog

Lidia Woźniak, 2014-05-21
Wrocław

Język angielski, Ćwiczenia

Ćwiczenia z języka angielskiego - jednostki miar

- n +

BASIC PHYSICS

WORD BANK
electric current – prąd elektryczny
electric charge - ładunek elektryczny
frequency - częstotliwość
dimension - wymiar
require - wymagać
force - siła
resistance - opór
pressure - ciśnienie

I. Complete the text with the right words.

equal occurs roughly measure rate
physicist absence difference unlike direction

The ampere (symbol: A) is the SI unit of electric current. The ampere, in practice often shortened to amp, is an SI base unit, and is named after Andre-Marie Ampere, one of the main discoverers of electromagnetism.
In practical terms, the ampere is a measurement of the amount of electric charge passing a point per unit time. Around 6.242 x 1018 electrons passing a given point constitutes one ampere. (Since electrons have negative charge, they flow in the opposite ……………… to the conventional current.)

The Kelvin (symbol: K) is a unit increment of temperature and is one of the seven SI base units. The Kelvin scale is a thermodynamic (absolute) temperature scale where absolute zero, the theoretical ………….. of all thermal energy, is zero kelvin (0K). The Kelvin scale and the kelvin are named after the British physicist and engineer William Thompson, 1st Baron Kelvin (1824-1907), who wrote the need for an “absolute thermometric scale”. …………… the degree Fahrenheit and degree Celsius, the kelvin is not referred to as a “degree” and it is written K not °K.

The curie (symbol: Ci/Bq-becquerel) is a unit of radioactivity, defined as one decay per second. This is …………….. the activity of 1 gram of radium isotope 226Ra, a substance studied by the pioneers of radiology, Marie and Pierre Curie.

The hertz (symbol: Hz) is a unit of frequency. It is defined as the number of complete cycles per second. It is the basic unit of frequency in the International System of Units (SI), and is used worldwide in both general purpose and scientific contexts. Hertz can be used to ……………. any periodic events; the most common uses for hertz are to describe radio and audio frequencies, more or less sinusoidal contexts in which a frequency of 1 hertz is equal to one cycle per second.

The joule (symbol: J), named after James Prescott Joule, is the derived unit of energy in the International System of Units. It is the energy exerted by a force of one newton acting to move an object through a distance of one metre.

The newton is the unit of force derived in the SI system; it is ………to the amount of force required to accelerate a mass of one kilogram at a rate of one metre per second.

The ohm (symbol: Ω) is the SI unit of electrical impedance or in the direct current case, electrical resistance, named after Georg Simon Ohm. The ohm is defined as the resistance between two points of a conductor when a constant potential …………….. of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force.

The pascal (symbol: Pa) is the SI derived unit of pressure, stress, Young’s modulus and tensile strength. It is a measurement of force per unit area, defined as one newton per square metre. In everyday life, the pascal is the best known from meteorological barometric pressure reports, where it ………….. in the form of hectopascals or kilopascals.

The volt (symbol: V) is the SI derived unit of electromotive force, commonly called “voltage”. It is named in honor of the Italian …………….. Alessandro Volta (1745-1827), who invented the voltaic pile, possibly the first chemical battery.

The watt (symbol: W) is a derived unit of power. It measures the ………… of energy conversion. One watt is equivalent to 1 joule (J) of energy per second. In terms of mechanical energy, one watt is the rate at which work is done when an object is moved at a speed of one metre per second against a force of one newton.


II. Translate the sentences into English.

1. Ciśnienie powinno być mierzone regularnie.
……………………………………………………………………………………….……………
2. Moja komórka była naładowana wczoraj wieczorem.
…………………………………………………………………………………………………….
3. Życie byłoby niemożliwe bez prądu elektrycznego.
……………………………………………………………………………………………………..
4. Ilość stopni nie została jeszcze podana.
……………………………………………………………………………………………………..
5. Bateria została wynaleziona prawie 200 lat temu.
……………………………………………………………………………………………………..
6. Naukowe książki są rzadko kupowane w naszej rodzinie.
……………………………………………………………………………………………………..
7. Niewiele jest wiadomo o tym sławnym odkrywcy.
……………………………………………………………………………………………………..
8. Ich siła nie została wykorzystana we właściwy sposób.
……………………………………………………………………………………………………..
9. Wskaźnik nie został jeszcze określony.
……………………………………………………………………………………………………..
10. Przedmiot będzie przemieszczony w inne miejsce.
……………………………………………………………………………………………………..
11. Artykuł o radioaktywności nie musi być napisany w tym miesiącu.
……………………………………………………………………………………………………..
12. Doświadczenie nie jest wymagane w tej pracy.
……………………………………………………………………………………………………..
13. Ostatnia jednostka nie została jeszcze nazwana.
……………………………………………………………………………………………………..
14. Ta nazwa może być zmieniona.
……………………………………………………………………………………………………..

Wyświetleń: 592


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