Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Tutorial for Masters.doc
Скачиваний:
0
Добавлен:
01.07.2025
Размер:
1.94 Mб
Скачать

I. Read the text. Choose the most suitable heading from the list (a-g) for each part (1-5) of the text. There are two extra headings which you do not need to use.

  1. X-rays Discovery.

  2. Hertz’s Experiment.

  3. Experimenting with Radioactive Elements.

  4. The Theory of Radio Waves.

  5. The Structure of an Atom.

  6. Radioactivity as a Kind of Radiation.

  7. The XIXth century discoveries.

II. Read the text. For statements (6-15) choose “True” if the statement is true according to the text, “False” if the statement is false:

  1. Due to James Clark Maxwell light is an electromagnetic radiation.

  2. In the nineteenth century Hertz used two metal balls to prove Maxwell’s discovery.

  3. Late in the nineteenth century waves of electromagnetic radiation were detected.

  4. In an absolute vacuum scientists could see the sparks in discharge tubes.

  5. J. J. Thomson predicted that atoms consist of electrons.

  6. Tiny particles of an atom were first detected by the scientists late in the nineteenth century.

  7. It was Wilhelm Roentgen who discovered X-rays.

  8. Uranium was used as a source of radiation for the experiments by chance.

  9. Radioactivity was forecasted by the Curie.

  10. Radioactive elements are widely used nowadays.

III. Read the text. For questions (16-20) choose the correct answer (a, b, c or d).

  1. Maxwell’s prediction concerned …

    1. light as radiation.

    2. discharge tubes.

    3. tiny particles of an atom.

    4. X-rays in particular.

  2. Hertz’s waves appeared to be …

    1. much shorter than radio waves.

    2. less longer than light waves.

    3. similar to those of light.

    4. called radio waves now.

  3. Scientists could see light in a discharge tube when …

    1. there was no air in it.

    2. they turned the tube.

    3. they passed electrical charges through the terminal.

    4. he temperature rose.

  4. The rays discovered by Röntgen were named …

    1. Röntgen’s rays.

    2. X-rays.

    3. mystery rays.

    4. light.

  5. Radioactivity was noticed by …

    1. Becquerel and the Curie.

    2. Poincare and Hertz.

    3. The Curie and Thomson.

    4. Maxwell and Röntgen.

IV. Match (21-30) with their definitions (a-l). There are two definitions that you do not need to use.

21.

light

A.

to gain knowledge of something

22.

to predict

B.

very small

23.

to find out

C.

electromagnetic radiation that is capable of causing a visual sensation

24.

wave

D.

to emit a steady even light without flames

25.

to detect

E.

consisting of matter all through

26.

tiny

F.

to discover the existence or presence of something

27.

vacuum

G.

to give off radiation or particles

28.

to glow

H

to make a declaration about something in advance

29.

solid

I.

a region containing no matter

30.

to emit

J.

any undulation on or at the edge of a surface

K.

to make or become greater in size

L.

the process of change in the physical position of an object

Supplementary Tasks :

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]