Английский язык. Ч.3 (Units 9,10). Ильичева Н.А - 37 стр.

5. Relativity does not contradict … …
6. Galilean-Newtonian relativity involves certain … … that make sense from
   everyday experience.
7. Scientists have accepted relativity as an … … of nature.
8. Maxwell showed that light can be considered an … …
9. To accelerate an object up to v = c would require … …
10. An … … doesn’t exist.
11. … … – lengths and distances – are different in different reference frames.
12. The laws of physics obey the … …


8. Choose the word in brackets to fill in the spaces.
1. We can no longer regard time as … quantity (an absolute / a relative).
2. No one doubts that time never flows … (onward / backward).
3. Clocks moving relative to an observer are measured by that observer to run ...
   as compared to clocks at rest (more slowly / faster).
4. The length of an object is measured to be … when it is moving relative to the
  observer than when it is at rest (longer / shorter).
5. Mass is measured to increase as its speed … (reduces / increases).
6. Light propagates through empty space with a speed … the speed of the source
   or observer (independent of / dependent on).
7. Nineteenth-century physicists assumed that light would have … speed in
   different frames of reference (a different / the same).
8. It is … to analyze events when they are observed and measured from inertial
   frames (easiest / most difficult).
9. As an object is accelerated to greater and greater speeds, its mass becomes…
   (smaller and smaller / larger and larger).




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