Английский язык. Ч.3 (Tests 10,11,12). Ильичева Н.А - 25 стр.

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8. 1. a) invisible; b) visible; 6. a) diverge; b) converge;
2. a) convex; b) concave; 7. a) rough; b) smooth;
3. a) entering; b) leaving; 8. a) sink; b) bulge out;
4. a) enhance; b) weaken; 9. a) absorbs; b) reflects;
5. a) wide; b) narrow; 10. a) destructive; b) constructive.
9. 1) specular reflection; 8) very smooth surface;
2) rough surface; 9) curved mirror;
3) inner surface; 10) highly polished surface;
4) concave mirror; 11) regular reflection;
5) flat surface; 12) reflecting surface;
6) convex mirror; 13) outer surface;
7) diffuse reflection; 14) internal reflection.
10. 1) exceeded; 9) deviate;
2) diffuse; 10) medium;
3) deviated; 11) transparent;
4) strikes; 12) disperse;
5) normal; 13) boundary;
6) transparent; 14) slit;
7) property; 15) diffuses;
8) incidence; 16) interference.
11. A. 1) direction; B. 1) assumption;
2) indirectly; 2) assume;
3) direct (v.); 3) assuming;
4) direction; 4) assumed;
5) directly; 5) assumptions.
6) direct (a);
7) indirect;
8) direction;
9) direct (v.).
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8. 1. a) invisible; b) visible;              6. a) diverge; b) converge;
     2. a) convex; b) concave;               7. a) rough; b) smooth;
     3. a) entering; b) leaving;             8. a) sink; b) bulge out;
     4. a) enhance; b) weaken;               9. a) absorbs; b) reflects;
     5. a) wide; b) narrow;                 10. a) destructive; b) constructive.

9.     1) specular reflection;            8) very smooth surface;
       2) rough surface;                  9) curved mirror;
       3) inner surface;                 10) highly polished surface;
       4) concave mirror;                11) regular reflection;
       5) flat surface;                  12) reflecting surface;
       6) convex mirror;                  13) outer surface;
       7) diffuse reflection;             14) internal reflection.

10. 1) exceeded;                     9) deviate;
      2) diffuse;                    10) medium;
      3) deviated;                   11) transparent;
      4) strikes;                    12) disperse;
      5) normal;                     13) boundary;
      6) transparent;                14) slit;
      7) property;                   15) diffuses;
      8) incidence;                  16) interference.

11. A. 1) direction;               B. 1) assumption;
         2) indirectly;               2) assume;
         3) direct (v.);              3) assuming;
         4) direction;                4) assumed;
         5) directly;                 5) assumptions.
         6) direct (a);
         7) indirect;
         8) direction;
         9) direct (v.).
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