Junior Science, Τόμος 1B.H. Sanborn, 1920 |
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Σελίδα v
... contains four Parts , distributed into twenty - two chapters : - Part I : Introduction . Part II : The Atmosphere and Its Relation to Man . Part III : Matter and Energy in Earth and Sky . Part IV : Science in the Household . Book II ...
... contains four Parts , distributed into twenty - two chapters : - Part I : Introduction . Part II : The Atmosphere and Its Relation to Man . Part III : Matter and Energy in Earth and Sky . Part IV : Science in the Household . Book II ...
Σελίδα x
... contain is formed when hydrogen burns ? hydrogen ? Is salt an element ? - What is phosphorus like ? ercises . - - - What is sulphur like ? What is a match ? - Ex- Water . CHAPTER XIV 141 How does Where is water found ? What is water ...
... contain is formed when hydrogen burns ? hydrogen ? Is salt an element ? - What is phosphorus like ? ercises . - - - What is sulphur like ? What is a match ? - Ex- Water . CHAPTER XIV 141 How does Where is water found ? What is water ...
Σελίδα 15
... , we make no account of the air which it contains . But when we try to find out whether or not air has weight , we must first get the weight of a vessel which is really empty , that is , without even air in it AIR 15.
... , we make no account of the air which it contains . But when we try to find out whether or not air has weight , we must first get the weight of a vessel which is really empty , that is , without even air in it AIR 15.
Σελίδα 23
... contain air ; we call it a vacuum , which means empty space . Torricelli's appa- ratus is called a barometer . It FIG . 13 . - A barom- - eter . The pressure of the atmosphere holds up the column of mercury . If the opening of a ...
... contain air ; we call it a vacuum , which means empty space . Torricelli's appa- ratus is called a barometer . It FIG . 13 . - A barom- - eter . The pressure of the atmosphere holds up the column of mercury . If the opening of a ...
Σελίδα 30
... containing water to the depth of about one inch , and light the candle . When it is burning briskly , put over it , and into the water , a bottle of fresh air . At first the candle flame burns just as it does in the outer air , but soon ...
... containing water to the depth of about one inch , and light the candle . When it is burning briskly , put over it , and into the water , a bottle of fresh air . At first the candle flame burns just as it does in the outer air , but soon ...
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