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Driving a boat by surface tension
Secure some gum camphor at the drug shop. Cut two or three boats from stiff paper, every about 2.5 cm in length. Cut a notch in the stern large sufficient to hold a small lump of gum camphor in contact with the water without letting it fall out. Float your boats in a large pan of water.
b) discuss briefly the scientific and technical achievements of the bronze age
Determine the term - soil moisture The higher the soil moisture, the more rapid is the rate of reaction. The quantity of liming material to be applied to raise the soil pH to a
Explain the property of Water Water has a significant property called surface tension that markedly influences its behaviour in soils and may be measured by level of water rise
give examples for one energy transformed to another energy
State the harmul effects of Acidity of soil Acidity of soil may have harmful effects on plants due to the effect on enzymatic changes, reduced availability of nutrients like c
What is the minimum depth required for a feature to be considered a canyon? In fact, it is a bit like allowing for when a few grains of sand become a heap of sand: there is no
Systems view of life: Evolution has given rise to various types of life forms from single celled bacteria to organisms as complex as a human being. It may interest you to know
A lamp chimney force pump Replace the piston in the lift pump explained above with a one-hole stopper. Fit the piston rod by the hole. Fit the bottom of the chimney with a two-
What time period can carbon-14 dates have? Carbon 14 has a half-life of 5,730 years, and thus it can be used to date very precisely a large majority of things, particularly woo
Soil Pollution: The problem of soil pollution is rapidly increasing in the rural, urban and industrial areas due to unscientific and irrational disposal of solid wastes gene
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