WHEN AIR MOVES by Mae Freeman

WHEN AIR MOVES

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KIRKUS REVIEW

When air moves, objects move; how air moves determines how objects move. Starting with simple principles that a child can verify, Mrs. Freeman explains the rationale of a propeller plane, a helicopter, a jet plane, rockets and capsules, and two newcomers, the hovercraft and the air train; useful diagrams and relevant, often striking photographs accompany. There are, of course, many books which treat the same phenomena but for the younger child this is exemplary in its combination of text and testing in its achievement of simplicity with precision, in its liveliness.

Pub Date: May 31st, 1968
Publisher: McGraw-Hill