Students Manual of Exercises in Elementary Biology
Students Manual of Exercises in Elementary Biology
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In our eReader you can find the full English version of the book. Read Students Manual of Exercises in Elementary Biology 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 Students Manual of Exercises in Elementary Biology
What reading level is Students Manual of Exercises in Elementary Biology book?
To quickly assess the difficulty of the text, read a short excerpt:
3. Try to tell how bending is brought about in the stem of the plant ?
4. How are changes in position brought about in the leafstalk ?
5. Do all plants behave the same way with relation to light?
6. Of what use to the plant is the reaction of light?
[43] EXERCISE 39 We learned that air is a mixture of several odorless, tasteless, colorless gases, of different specific gravities. Instead of forming layers with the heaviest at the bottom and the lightest at the top, gases in contact spread throug...h each other in all directions, or diffuse.
Problem. How readily can gases spread and mix (diffuse) ?
What to use. Several volatile substances with distinct odors for example, carbon bisulfid, perfume, chloroform, ether, alcohol, acetic acid.
What to do. Open a bottle of one of the substances in the middle of the room ; as soon as pupils in the farthest parts of the room detect the odor, make a note of the time. Repeat with each of the other substances.
Record. Make a table showing the time required for each of the gases to diffuse a given distance.
What to read after Students Manual of Exercises in Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin C Benjamin Charles Gruenberg to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
3. Try to tell how bending is brought about in the stem of the plant ?
4. How are changes in position brought about in the leafstalk ?
5. Do all plants behave the same way with relation to light?
6. Of what use to the plant is the reaction of light?
[43] EXERCISE 39 We learned that air is a mixture of several odorless, tasteless, colorless gases, of different specific gravities. Instead of forming layers with the heaviest at the bottom and the lightest at the top, gases in contact spread throug...h each other in all directions, or diffuse.
Problem. How readily can gases spread and mix (diffuse) ?
What to use. Several volatile substances with distinct odors for example, carbon bisulfid, perfume, chloroform, ether, alcohol, acetic acid.
What to do. Open a bottle of one of the substances in the middle of the room ; as soon as pupils in the farthest parts of the room detect the odor, make a note of the time. Repeat with each of the other substances.
Record. Make a table showing the time required for each of the gases to diffuse a given distance.
What to read after Students Manual of Exercises in Elementary Biology?
You can find similar books in the "Read Also" column, or choose other free books by Benjamin C Benjamin Charles Gruenberg to read onlineMoreLess
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