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gas-compressibility

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Journal Articles
The American Biology Teacher. 2017; 79149–54 doi: https://doi.org/10.1525/abt.2017.79.1.49
Published: 01 January 2017
... public. In this three-part activity, students are introduced to the concepts of buoyancy and overfishing in an effort to provide a glimpse of how interesting fish are, and to raise awareness of overfishing. The students investigate buoyancy and gas compressibility by recreating a mysterious boat-sinking...
Journal Articles
The American Biology Teacher. 2017; 799787–791 doi: https://doi.org/10.1525/abt.2017.79.9.787
Published: 01 November 2017
...: Territoriality in Cichlids............................1:41-I Floating Fishes: An Activity Investigating Overfishing, Buoyancy & Gas Compressibility............................1:49-I Modeling Evolution in the Classroom: An Interactive LEGO Simulation............................2:130-I Sexual...
Journal Articles
The American Biology Teacher. 2013; 755345–348 doi: https://doi.org/10.1525/abt.2013.75.5.9
Published: 01 May 2013
..., 12, 15, 18, and 21 days past the expiration date into four kinds of dry rehydratable films. Measure the number of colonies after compressing and cultivating four kinds of dry rehydratable films inoculated with milk at room temperature for 48 hours. The method of measuring the number of bacteria...
Journal Articles
The American Biology Teacher. 2013; 753186–192 doi: https://doi.org/10.1525/abt.2013.75.3.7
Published: 01 March 2013
... ≥2 years within a glass globe of seawater, is used as an inspirational example for students to create their own long-lived system. Challenges that affect the stability of a self-contained ecosystem involve balancing gas exchange through photosynthesis and respiration (e.g., Campbell & Reece...
Journal Articles
The American Biology Teacher. 2004; 662120–127 doi: https://doi.org/10.2307/4451637
Published: 01 February 2004
... gas through pipelines (Batchelor, 1988). It therefore represents a general physical principle of which water flow through xylem is one special case. At first glance, this equation seems difficult to believe. From it one must conclude that a large pipe, or a blood or xylem vessel, will conduct 256...
Journal Articles
The American Biology Teacher. 2001; 63296–101 doi: https://doi.org/10.2307/4451050
Published: 01 February 2001
... has resulted in a demand to compress more information into the freshman biology curriculum. This has occurred simultaneously with an increase in faculty workloads and class sizes (National Science Foundation 1996). Thus, while many instructors may have a desire to reform their curriculum, often the...
Journal Articles
The American Biology Teacher. 2000; 62132–40 doi: https://doi.org/10.2307/4450823
Published: 01 January 2000
... the old deferential- ists and the textbooks portray (Haack 1996a, b). Phi- losophers and sociologists of science study science as a cultural and political phenomenon. They believe that science does not progress in such a logical, Kelly R. Spiece is Associate Editor of Compressed Air maga- zine and can...
Journal Articles
The American Biology Teacher. 1995; 57283–86 doi: https://doi.org/10.2307/4449928
Published: 01 February 1995
... Mitchell, G. (1910). Contributions towards a knowl- edge of the genus Selaginella Spr. Part V. The strobilus. Annals of Botany, 24, 19-37. Mitchell 19 24 Annals of Botany 1910 Page, C.N. (1989). Compression and slingshot me- gaspore ejection in Selaginella selaginoides-A new phenomenon in...
Journal Articles
The American Biology Teacher. 1995; 57156–59 doi: https://doi.org/10.2307/4449917
Published: 01 January 1995
..., Fuller also created a concept called tensegrity or tensional integrity, which means a structure held together solely by ten- sion without any compression. While this idea is fascinating when used in sculptures such as those of Kenneth Snelson, it has become even more in- teresting to biologists since the...
Journal Articles
The American Biology Teacher. 1994; 56114–20 doi: https://doi.org/10.2307/4449736
Published: 01 January 1994
.... The target tissue in the particle gun was in a vacuum. Modifications of the prototype particle gun include the use of an electric discharge or compressed gas to accelerate the macropro- jectile (Johnston 1990; Oard et al. 1990). In the helium-driven bi- olistic instrument (Figure 3), helium gas under...
Journal Articles
The American Biology Teacher. 1994; 56126–37 doi: https://doi.org/10.2307/4449738
Published: 01 January 1994
... current level of knowledge. For other planets, the presence of life in any form is conjectural. Table 2. The composition of dry air in Earth's atmosphere.* Percentage of atmosphere by Constituent gas Symbol volume Nitrogen N2 78.08 Oxygen 02 20.95 Argon Ar 0.93 Carbon dioxide CO2 0.03 Trace gases...
Journal Articles
The American Biology Teacher. 1990; 527422–426 doi: https://doi.org/10.2307/4449157
Published: 01 October 1990
... without a major investment of time or money. The nitrogen cycle (Figure 1) is com- monly studied as an example of nutri- ent cycling. Nitrogen can occur in a variety of chemical forms, ranging from protein in living and dead organ- isms to relatively inert N2 gas to such soluble forms as nitrate. Cycling...
Journal Articles
The American Biology Teacher. 1988; 506362–366 doi: https://doi.org/10.2307/4448762
Published: 01 September 1988
... functioning of the valves. If one compresses a prominent vein in the arm to stop the flow of blood, then, while holding the compression, another person presses the vein below the compression and moves his finger along it toward the hand, the vein below the finger will en- large and a bulge can be seen where a...
Journal Articles
The American Biology Teacher. 1987; 497446–450 doi: https://doi.org/10.2307/4448585
Published: 01 October 1987
...Don Igelsrud Copyright 1987 National Association of Biology Teachers Labs Sea Urchins Don Igeisrud Department Editor The sea urchin is excellent for studying the early stages of develop- ment (fertilization, cleavage and gas- trulation). Some species are better than others for demonstrating...
Journal Articles
The American Biology Teacher. 1986; 483129–180 doi: https://doi.org/10.2307/4448236
Published: 01 March 1986
...; 1Cn stuafrwr ,, I In jnesadn _I g A step ahead Silver Burdeft 250 James Street 1925 Century Boulevard NE 3814 West Street 8301 Ambassador Row 191 Waukegen Road 1559 Industrial Road Morristown, NJ 07960-1918 Atlanta, GA 30345 Cincinnati, OH 45227 D)allas, TX 75247 Northfield, IL 60093 San Carlos, CA...
Journal Articles
The American Biology Teacher. 1986; 484235–238 doi: https://doi.org/10.2307/4448272
Published: 01 April 1986
... heavy atoms on earth suggests that there was a relatively close supernova just prior to the for- mation of the solar system. The shock wave produced by this su- pernova probably compressed interstellar gas and dust, trig- gering the solar system's con- densation (Barrow & Silk 1980; Herbst & Assousa...
Journal Articles
The American Biology Teacher. 1985; 478502–505 doi: https://doi.org/10.2307/4448173
Published: 01 November 1985
... strategies that were used by students who were successful and unsuccessful at solving chemistry problems in four areas: moles; stoichi- ometry; gas laws; and molarity. A second question was related to dif- ferent strategies, success/nonsuccess and whether the students were high or low in proportional...
Journal Articles
The American Biology Teacher. 1985; 478504–505 doi: https://doi.org/10.2307/4448174
Published: 01 November 1985
... research review on genetics problem solving. The authors were primarily interested in differences in problem-solving strategies that were used by students who were successful and unsuccessful at solving chemistry problems in four areas: moles; stoichi- ometry; gas laws; and molarity. A second question was...
Journal Articles
The American Biology Teacher. 1981; 436293–330 doi: https://doi.org/10.2307/4447281
Published: 01 September 1981
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Journal Articles
The American Biology Teacher. 1980; 424259 doi: https://doi.org/10.2307/4446933
Published: 01 April 1980
... your free copy today. Write Dept. BA-803. X %/liiJCO Free Phone Order Service Fort Atkinson, WI 53538 I 8005589595 Modesto, GA 95352 In Wisconsin 1*800*242-9587 A-804. LIFE BEFORE BIRTH: THE STORY OF THE FIRST NINE MONTHS by Stephen Parker, with illustrations by John Bavosi, and the British Mu- seum...