Junior High School ScienceHarr Wagner Publishing Company, 1937 - 512 pages |
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Common terms and phrases
alternating current animals ants automobile bacteria barometer beautiful bees birds body buds burn called carbon carbon dioxide carry cause cells centigrade centimeters coil color cool Courtesy George decimeters dicot dioxide direct current distance earth eggs electric current electric light electroplating Fahrenheit feet fish flame flies flowers friction fruit give glass grafting ground grow heat hive honey insects iron keep kill kind lakes larvæ layer lead dioxide leaves lever lift live locusts machine magnet mechanical advantage meter metric system miles monocot moon mosquito mountains move Name nests ocean oxygen pistil plants plate poisonous poles pollen pounds produced pulley pupa rats rays refrigerator rocks roots ropes seeds sepals snakes soil Sometimes sound spider stems stick stone storage battery streams temperature things toads trees tricity units of measure vibrations weather weight wind wire wood