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Observing sun spots
Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the sun is formed on a piece of white cardboard placed a short distance from the eyepiece lens. If sun spots are there on the surface of the sun you may be able to observe them as small dark spaces of irregular outline on the image. Caution. Do not look at the sun by the telescope, unless your eyes are protected by a dark glass filter.
what are atoms
Define the term Blood “The ancients believed that blood was the seat of the emotions". Blood, a body fluid, has been correctly termed as an elixir of life. We all have blood
Oxidising Substances : It includes oxidising substances and the organic peroxides. Oxidising substances are by themselves not combustible but by feeding oxygen to other substances
Explain the Passive Factors or Passive Soil Formers Passive factors are by and large slow acting factors and include parent material, topography and time.
Q.How does the atmosphere act as a blanket? The atmosphere acts as a blanket by performing the following functions: (a) It keeps the average temperature of the Earth fairly c
How to make an experimental biter Fit a one-hole stopper carrying a short length of glass tube into the small end of a lamp chimney. Put a little cotton wool in the bottom and
What is genetics>
Moving loads on a trolley : Loads on a trolley, are normally moved through pulling or pushing process. During the pulling process, the whole strain is to be taken by the back musc
In a unicellular organism, the interior region of the organism is no longer in contact with the external environment. Thus simple processes of diffusion, phagocytosis, exocyt
Explain the Hyperpnoea It is a term for an increase in the rate and depth of respiration. The cause of hyperpnoea may be voluntary or due to impulses from the hypothalamus.
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