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III. VOCABULARY EXPANSION: Oral Exercises

NOTE : Many words in English have a noun form and a verb form; there

is usually very little difference in the meaning. Often the verb is changed to the

noun by the addition of "-tion."

Directions:

(1) Read the sentence to yourself.
(2) Make and say a simple sentence using the underlined verb as a noun with

the same general meaning. (Add "-tion.")

a. The Coriolis force acts on the air moving poleward.

b. There is a system to abbreviate the cloud names.

c. Water evaporates much faster on a hot, dry day.
d. The indicator rotates to show the wind direction.

e. Weather stations communicate their readings to a central station.

f. A change in pressure often indicates a change in weather.

g. They correct all errors with a red pencil.

h. Air masses migrate from area to area.

i. The mountains north of here deflect a lot of the wind to the east.

j. They locate weather stations throughout an area.
k. After a few years, the station accumulates a lot of records about the weather in that area.

i. The air circulates from the equator to the poles and back again.

m. Cumulus clouds form in unstable air.

n. The moisture in the air condenses and precipitates.