One Hundred Experiment in Elementary Agriculture for California Schools
One Hundred Experiment in Elementary Agriculture for California Schools
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In our eReader you can find the full English version of the book. Read One Hundred Experiment in Elementary Agriculture for California Schools Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book One Hundred Experiment in Elementary Agriculture for California Schools
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To quickly assess the difficulty of the text, read a short excerpt:
28. Evaporation Illustrated.
(a) Take a few grains of soil from one of the tubes in 27 (f) and scatter them about over the bottom of a saucer. Look at them after a few hours. What has happened? Explain.
* * * (b) In a similar manner expose a few grains of soil (not too wet) and keep a fan moving vigorously over the saucer for a few minutes. What is the result as compared with (a) ? Why is there a difference? Is a windy day or a quiet one the better for drying newly laundered clothing, hay, or t...he earth's surface after a rain?
* * * (c) Put a few grains of soil as in (a) and (b) into a pan and set over the alcohol lamp or on the stove. Compare the results with those obtained in (a) and (b). Why is there a difference? What two things have we found to be aids to evaporation?
* * * (d) Fill two tubes similar to those used in 27 (f) with clay of same quality as that used in the experiment mentioned. Wet the soil in these and also in the one used in that experiment until satu- rated. Smooth the surface of one so that it will form a crust.
What to read after One Hundred Experiment in Elementary Agriculture for California Schools?
You can find similar books in the "Read Also" column, or choose other free books by Riley O Johnson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
28. Evaporation Illustrated.
(a) Take a few grains of soil from one of the tubes in 27 (f) and scatter them about over the bottom of a saucer. Look at them after a few hours. What has happened? Explain.
* * * (b) In a similar manner expose a few grains of soil (not too wet) and keep a fan moving vigorously over the saucer for a few minutes. What is the result as compared with (a) ? Why is there a difference? Is a windy day or a quiet one the better for drying newly laundered clothing, hay, or t...he earth's surface after a rain?
* * * (c) Put a few grains of soil as in (a) and (b) into a pan and set over the alcohol lamp or on the stove. Compare the results with those obtained in (a) and (b). Why is there a difference? What two things have we found to be aids to evaporation?
* * * (d) Fill two tubes similar to those used in 27 (f) with clay of same quality as that used in the experiment mentioned. Wet the soil in these and also in the one used in that experiment until satu- rated. Smooth the surface of one so that it will form a crust.
What to read after One Hundred Experiment in Elementary Agriculture for California Schools?
You can find similar books in the "Read Also" column, or choose other free books by Riley O Johnson to read onlineMoreLess
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