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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.
Chemical Evolution The question of how life came into being in the first place still remained unanswered. To find an answer to this question means looking back billions of y
If the Quabbin Reservoir Watershed is 100 km2, the average precipitation in New England is 130 cm/year, and the volume of the reservoir is 1.5 x 1012 liters, what is the residence
How water can be decomposed You will require a six-volt storage battery or accumulator or a battery of six dry cells for this interesting experiment. Take away the insulation f
Define the Sympathetic Nervous System The sympathetic component of the autonomic nervous system is concerned with in- creasing the level of arousal and energy expenditure - pri
Emergence of chemistery: Chemistry The level of chemical knowledge and practices in the new ordered society is reflected in the pottery, iron tools and glass objects found at
The Copernican Revolution: The Copernican model consisted of the Sun at the centre with the six planets, Mercury, Venus, the Earth with the Moon-round it, Mars, Jupiter and
Lifting water with air pressure Fit a test tube with a single-hole cork and glass tube. Drive out the air by boiling a little water in it. Invert it with the open end under the
how to prevent skin problems?
PROCEDURE : Your Counsellor will be performing the following experiments. You are advised to observe the disposal methods carefully. Experiment 1: Test for studying miscibility
Eye Injuries : The eyes are a particularly vulnerable part of your body. Safety glasses, goggles or a face shield are a 'must' for any experiment where there is any , danger of sp
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