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Another aneroid barometer
Stretch a piece of thin rubber in excess of the mouth of a small glass jar. Wind thread or string over the rubber to secure it and then put a ring of household cement under the edges of the rubber sheet which have been trimmed off. Cut a thin circle from the finish of a cork and glue this to the centre of the rubber. Next glue a long broom splint or soda straw to the cork. Cut a little wooden triangle from a match stem and glue to the edge of the bottle so that the splint or soda straw rests on it.
A low-gradient stream would most likely form a: meander
Blowing soap bubbles Soap films and bubbles serve very well for observations on surface tension. You can make a good soap bubble solution by placing three level tablespoonfuls o
discuss the importance of society and culture to existence of man .
To show how soil is formed from rocks Carefully heat a piece of glass in a flame and then plunge it into cold water. The unexpected cooling of the glass causes it to contract u
Causes of Fire : The potential fire risk arises from the presence of combustible solids, liquids or gases in conjunction with ignition sources. One or more class is generally fou
A lift pump To change the syringe and make a simple lift pump, burn two holes by the piston with a hot wire and fit a thin piece of leather or rubber above them to act as a val
Explain Passive transport or diffusion - Mechanism of Urine Formation Passive transport or diffusion: Diffusion means the random movement of particles in a fluid. The movement
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how many eggs does human have?
How do you explain the fact that clay soils which commonly have higher pore space than sandy soils are often more poorly aerated than sandy soils. Clay soils have higher pore s
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