General Science |
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Common terms and phrases
absorb acid ammonia amount of heat atmosphere atoms bacteria baking soda Big Dipper body boiler boiling bottle Bunsen burner burning called candle carbon dioxide cause cells chemical cities coal cold color compounds conduction convection currents cooker cool crust dissolved earth elements energy evaporation Experiment Fahrenheit Figure fire flame flask freezing fuel furnace gases glass tube hard water hole hot air hot water hydrochloric acid hydrogen inch International Date Line iron kindling layers light liquid litmus paper match mercury meridian metal miles mixture moisture molecules moon move ocean orbit oxygen particles phosphorus pipes plant potassium chlorate pound pressure produce pump radiation rapidly rays rise rock roots rotation rubber salt sand seeds shows side soil solar solar system space stars steam stopper stove substances supply surface temperature test tube thermometer trees warm weather weight winds
Popular passages
Page 522 - These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw.
Page 5 - The skies are painted with unnumber'd sparks; They are all fire and every one doth shine; But there's but one in all doth hold his place.
Page 1 - If the stars should appear one night in a thousand years, how would men believe and adore; and preserve for many generations the remembrance of the city of God which had been shown ! But every night come out these envoys of beauty, and light the universe with their admonishing smile.
Page 13 - Of these, the only ones of use to the navigator are Venus, Mars, Jupiter, and Saturn. Mercury is so near the sun as to be usually in the brightly lighted part of the sky and is...
Page 2 - Why didn't somebody teach me the constellations, too, and make me at home in the starry heavens which are always overhead, and which I don't half know to this day?
Page 265 - Turn, turn, my wheel ! All things must change To something new, to something strange ; Nothing that is can pause or stay ; The moon will wax, the moon will wane, The mist and cloud will turn to rain, The rain to mist and cloud again, To-morrow be to-day.
Page 111 - In this way each piece is made to indicate its own temperature without possibility of mistake. Liquid Thermometers. In the most common form of thermometer, temperature is measured by the expansion of mercury in glass. On the end of a glass tube of very fine bore, a bulb is blown (see Fig.
Page 131 - To make a happy fire-side clime To weans and wife, That's the true pathos and sublime Of human life.
Page 273 - evidence of things not seen," in the fulness of Divine grace ; and was profound on this, the greatest concern of human life, while unable even to comprehend how the " inclination of the earth's axis to the plane of its orbit" could be the cause of the change of the seasons.
Page 115 - The calorie is the amount of heat necessary to raise the temperature of one gram of water one degree centigrade.