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Posts Tagged ‘physics practicals’

Many practical classroom activities could be carried out, when teaching the concepts of conduction, convection, and radiation. These are simple yet relevant, and would allow students to understand the topic easily. The concept has to be taught in the first 15 minutes of the 1-hour class and then proceed to show some of these demos.

The teacher prepares the materials needed and see to it that safety precautions are observed.

CONDUCTION ACTIVITY

  1. Prepare three different rods such copper, glass, and iron (or whatever is readily available, except of course plastic rods).
  2. Place them on a tripod and fix a small nail near one end of each rod using candle wax or Vaseline as ‘glue’. (Make sure the rods are not touching each other).
  3. Using a bunsen burner, heat the other ends of the rods evenly.
  4. Record the time it takes for each nail to drop off from the respective rods? (more…)
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There is a very practical and simple way to make and test electromagnets in science laboratory. After you are done discussing the theory of electromagnets, it is time to allow students some hands-on activities, to thoughtfully remember the concept. This is not a grand experiment though, but at least your high school students could look into how and what are the necessary materials needed to make a simple electromagnet, and test its strength afterwards. (more…)

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You could do a simple demo to show that gas expands as you heat it.  If a substance is heated, the molecules in that substance start to move and soon take up more space – IT EXPANDS. (more…)

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The sun is a primary source of the Earth’s energy.  In fact, the energy to heat us up travels from it at the speed of light, just like the light rays.  This particular energy rays that cause the most heating are called infra-red rays.  These are also light rays but of longer wavelength. Since it is a light ray, it can also be reflected by mirrors. This is where the idea of ‘solar furnace’ comes about, particularly in hotter parts of the world where solar furnace is used, to collect the rays from the sun and focus them on to kettles or cooking pans. (more…)

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