Английский язык. Ч. 1. Ильичева Н.А - 27 стр.

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          2) a) developed, b) came; c) was trying; d) decided.

                      Unit 4 – Temperature and Thermometers

       1. a) It plays an important part in our daily lives. We like our coffee hot and
our ice cream cold. The temperature of our living and working quarters must be care-
fully adjusted to our bodies’ heat demands. The daily temperature reading is perhaps
the most important part of a weather report. How cold or how hot it will be affects the
clothes we wear and the plans we make.
          b) The heat balance between various parts of earth and its atmosphere gives
rise to wind, rain and other weather phenomena. The thermal pollution of rivers that
can be be caused by hot water from power plants is a cause for concern. On a cosmic
scale, the temperature of various stars gives clues to their ages and the origin of the
universe.
          c) it is difficult to do without thermometers in our daily life because sense
perception is unreliable.
       2. a) relative; b) faster; c) use of a thermometer; d) visible; e) twice as large.
       3. 1 – E; 2 – C; 3 – B; 4 – F; 5 – A; 6 – D.
       4. –
       5. A 1) expand – contract; 2) solid – liquid; 3) ice point – stream point; 4) hot-
ness – coldness; 5) upper – lower; 6) equal – unequal;
          B 1) hotness, coldness; 2) upper, lower; 3) expand, contract; 4) equal; 5) un-
equal; 6) ice point; 7) stream point; 8) solid, liquid.
       6. 1) measure; 2) properties; 3) designed; 4) operation; 5) scale, scale; 6) sense
of touch; 7) convert; 8) accomplished; 9) equals; 10) readings.
       7. A 1) molecular; 2) intermolecular; 3) thermal; 4) increasing; 5) hollow; 6)
reference; 7) lowest; 8) temperature; 9) upper’ 10) equal;
          B 1) increasing temperature; 2) reference points; 3) intermolecular forces; 4)
equal intervals; 5) temperature scale, scale; 6) thermal expansion; 7) molecular level;
8) upper limit; 9) lowest reading; 10) hollow glass tube.
       8. A 1) measurement; 2) measure; 3) measurements; 4) measure; 5) measure;
          B 1) equivalent; 2) equation; 30 equal; 4) equals; 5) equation.
       9. 1) Temperature is a measure of how hot or cold an object is.
          2) Most substances expand when heated and contract when cooled. How-
ever, the amount of expansion or contraction varies, depending on material.
          3) The electrical resistance of matter changes with temperature. At high
temperatures the colour radiated by objects changes too. Such solids as iron glow or-
ange or even white.
       10. –
       11. A – 3; b – 1; c – 4; d – 2.
       12. a) multiply; b) 27; c) add; d) 27; c) 59o F.
       13. 1. a) subtracting; b) 3; c) equivalent; d) -270oC;
            2. e) multiply; f) add; g) - 454o F.
       14. a) heated; b) cooled; c) contraction; d) directly; e) original; f) expansion; g)
200m; h) 4,8cm; i)– 50oC; j) 12 cm.