Ex. 8 Fill in the blanks with prepositions where ncccssary. of, to, with, for, in, by, in terms of
I. If an idea explains or correlates a number ... facts, wc call it a
hypothesis. 2 Scientists subject the idea ... experimental checking. 3 If
the hypothesis agrees ... the results ... experiment, wc call i t ... a theory
or ... a law. 4 ... example, everybody knows the periodic law. 5 The
explanation... the fact is ... the atomic theory. 6...crystals the atoms arc ... a regular order. 7...the atomic thcoiy wc mean that substanccs consist
... atoms. 8 Scientists explain facts ... atoms and their structure.

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