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III. VOCABULARY EXPANSION: Oral Exercises

Use the correct form of the words listed to complete the following

sentences. Some words may be used more than once.

a. vision, n. visible, adj. visibility, n.

invisible, adj. visibly, adv.

(1) You can't see air, it's a good example of something that is _______________ .

(2) It is a good idea to have your_______________________ checked every year.
(3) After a cold front passes, the air clears and ________________ is very good.

(4) When ice is just ____________________________on the surface ut does not

accumulate, it is classified as "trace.’’

(5) The shape of the wing changed __________________as the ice accumulated.
(6) Convection currents are ___________________________ but cumulus clouds

are an indication that they are occurring.

b. limit, n. limit, v. limited, adj. unlimited, adj.

limitations, n. limiting, adj.

(1) Even' on a cloudless day, haze can ________________________ visibility to a

short distance.

(2) It was such a clear day that we had _________________________visibility.

(3) If you want to go on the trip, tell them quickly; because the number they

can take is __________________________ .