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Drinking straw hydrometer
Procure a drinking straw or a stout natural straw about 20 cm long. If it is not 'water-proof' dip it in melted candle wax and permit it to dry. Seal one end with wax, and introduce some lead shot or fine sand unless it floats in a vertical position. Then drop in melted wax to keep the shots or sand in place. Have a thin rubber band or a piece of black cotton tied round the stem so that it can be slid up and down as a marker.
SOIL CLASSIFICATION The purpose of any classification is to organise the knowledge and ideas of a given field in the best possible manner so that the relationships between dif
Do Nancy Christopher''s peculiar habits make her abnormal? Why or why not?
Archaeological Evidence: The study of human antiquities, especially of prehistoric period is known as archaeology. The biological and cultural evolution of man proceeded side
Q. When are conditions right for harvesting a crop for local and distance markets? The conditions right for harvesting a crop for local markets: harvest in the early morning t
Nature of scientific knowledge: Science, as we have seen, is inseparable from the rest of human endeavour. In the past few thousand years of human history, an immense fund of
what does homogenious mean?
Explain the procedure of Rock Formation Metamorphic Rocks? Concept 1 : What is a metamorphic rock? First off, what does metamorphism mean? To morph is to change; a butterfly
A weather house Changes in the amount of water vapour are in the atmosphere can be indicated by variation in tension in a few strands of human hair or by using the hygroscopic
How can percentage of solid particle been calculated The percentage of solid particles and pore space in a soil may be calculated from the bulk density and particle density if
Respiration: Food + oxygen -> carbon dioxide + water + energy Food is not only a source of energy, but also the nutrients used to build up the organisms' bodies. So we
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