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Content: практ задание соврем конц естеств готовая.doc 54 kB

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Problem 1. Before you the scheme of interrelationships of the basic natural sciences:

Indicate the interdisciplinary sciences indicated in the scheme with the letters A, B, C, D:
1) geochemistry
2) biochemistry
3) Biophysics
4) geophysics
Task 2. Proceeding from the principle of causality, recognized by the methodology of natural science, make up a causal chain of the following phenomena:
1) flash of lightning and thunder
2) accumulation of electric charge on clouds
3) the appearance of an electric discharge in the atmosphere
Task 3. Arrange in the sequence, reflecting the order of their implementation, the following stages of the experimental method of Galileo:
1) experimental verification of the consequences of the hypothesis
2) the establishment of hypotheses on the basis of observational data and experiments
3) derivation of consequences from hypotheses
Problem 4. The completion of the experimental proof of the existence of electromagnetic waves was the demonstration by Popov in 1896 of the transmission of the first radiogram at a distance of 250 m, consisting in two words "Heinrich Hertz", sent at a speed of propagation of electromagnetic waves Vc = 3108 m / s. "
After what time did the transmitted signal reach the receiver?
Problem 5. Indicate the basic formulas of relativistic mechanics.
1. m = m0 / (1 - v2 / c2) 1/2
2. l = l0 (1-v2 / c2) 1/2
3. S = gt2 / 2
4. S = v0 t
5.  t =  t0 / (1 - v2 / c2) 1/2
6. F =  m1 m2 / R2

Problem 6. Elementary particles that transmit the interaction are: gravitons, photons, weak bosons, gluons. Put these concepts in line with the types of fundamental interactions in nature transmitted by these particles.
a) electromagnetic interaction
b) strong nuclear interaction
c) weak interaction
d) gravitational interaction 1. gravitons
2. photons
3. Weak bosons
4. Gluons

Problem 7. Make the right conclusion from the text.
According to the theory of the chemical structure, carbon atoms can be combined in a variety of ways between themselves and with the atoms of other elements, forming a huge variety of organic compounds, for example:

Thus, within the framework of the theory of the chemical structure, the diversity of organic compounds is explained ...
1) the variety of elements that form organic compounds
2) isotopic composition of carbon
3) carbon allotropy
4) the phenomenon of isomerism
Task 8. Arrange in the order, reflecting the degree of their complication, the following levels of organization of wildlife:
1) the cellular level
2) the molecular level
3) population-specific level
4) Organism level
Problem 9. As a result of the dihybrid crossing of two pure peas with yellow smooth seeds and green wrinkled, four groups of seeds of hybrids of the second generation differed in appearance: yellow smooth, yellow wrinkled, green smooth, green wrinkled. Given that the yellow color and the smooth shape of the seeds are dominant and using the law of independent combination of Mendel´s attributes, calculate how many yellow smooth seeds are obtained, if it is known that in other groups the number of seeds is as follows: yellow wrinkled - 900, green smooth - 900, green wrinkled - 300.
Task 10. Set the following biogeochemical functions of living matter in accordance with their definitions, formulated in Vernadsky´s biosphere theory.
1. Gas function a) realization of oxidation-reduction reactions underlying any kind of biological metabolism
2. Energy function b) absorption and release of living matter by oxygen, carbon dioxide and some other gaseous compounds
3. Oxidation-reduction function c) assimilation by living matter of solar energy and its transmission along the trophic (food) chain

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