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Comprehension check

  1.  A Reality Check
  2.  Below you will find multiple choice questions on the troubleshooting and repair. By answering them you will be able to check your knowledge on the topic.
  3.  COMPREHENSION
  4.  Comprehension check
  5.  Comprehension check
  6.  Comprehension check

1. Match the discoveries and inventions with the names of scientists.

 Marie Curie  found out that uranium salt emitted penetrating rays.
   invented an electrometer.
 Henri Becquerel  isolated two radioactive elements and named them polonium and radium.
   found that thorium gave off rays.
 Pierre Curie  yielded a gram of radium
   discovered uranium compounds that emitted very strong radiation.

2. Complete the sentences choosing the best ending a, b, or c.

a) X-rays

a) were detected using an electrometer.

b) and some other types of rays were discovered in the 1890s.

c) were the only surprise of the 1890s.

b) Henri Becquerel

a) used different fluorescent compounds in his experiments.

b) hoped to produce X-rays.

c) found out that fluorescing materials generated X-rays.

c) Marie Curie

a) experimented with Roentgen rays.

b) invented a new device for her experiments.

c) used an electrometer instead of photographic plates.

d) Marie Curie

a) measured very strong currents in the air after bombarding it with X-rays.

b) was inspired by Becquerel's work and studied compounds of uranium.

c) that newly discovered rays could be produced in the same conditions as X-rays.

e) The term "radioactivity"

a) comes from Greek.

b) is based on the Latin word for ray.

c) was introduced by Pierre Curie.

f) Pierre Curie

a) always helped his wife.

b) and Marie Curie made several amazing discoveries.

c) never conducted his own research.

g) The Curies

a) managed to extract two radioactive elements in 1898.

b) isolated a number of radioactive substances from uranium pitchblends.

c) gave names to newly discovered radioactive elements.

h) In their experiments the Curies

1. had to process tons of pitchblende to get radioactive substances.

2. did not manage to separate the ore into elements.

3. used a small amount of pitchblende for isolating radioactive elements.

3. Answer the following questions.

1. What rays were discovered in the 1890s?

2. What experiments did Henri Becquerel make? What did he try to prove?

3. What did he find out as a result of his experiments?

4. What minerals did Marie Curie use in her experiments?

5. Why did she use an electrometer?

6. Why, in your opinion, did Marie Curie begin to study the compounds of uranium but not other substances?

7. What properties of uranium did Marie Curie reveal?

8. How did she explain the nature of these rays?

9. What other mineral samples did she study?

10. What did she find out as a result of her research?

11. What explanation did she give to her discoveries?

12. What new elements did the Curies isolate and what names did Marie Curie give to them?

13. What prizes did the Curies get for their work?




 THE PRE_ATOMIC AGE |  THE PRE-ATOMIC AGE |  Comprehension check |  Vocabulary work |  Reading |  Comprehension check |  Pre-reading tasks |  Pre-reading tasks |  FURTHER ADVANCES IN THE FIELD OF RADIOACTIVITY |  RADIOACTIVITY AND RADIOACTIVE EXPOSURES |

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