Question
Write five sentences to conserve water.
✓
Answer
- Water is a precious gift of nature.
- We should not waste it. Try to ‘save every drop of water’.
- Always be careful that water tank in your house does not overflow when it is being filled.
- If we leave the tap running while brushing our teeth, nearly 16 litres of water get wasted. We should fill a mug of water and use that instead.
- We should not water our garden by drinking water instead we have to reuse the water from washing clothes and cleaning utensils.
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Activity.
Take four lengths of electric wire with differently coloured plastic coverings. Remove a little of the plastic covering from each length of wire at the ends. This would expose the metal wires at the ends of each length. Fix the exposed parts of two wires to the cell and the other two of the bulb as shown in Fig. $(A)$ and Fig. $(B).$
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→Take four lengths of electric wire with differently coloured plastic coverings. Remove a little of the plastic covering from each length of wire at the ends. This would expose the metal wires at the ends of each length. Fix the exposed parts of two wires to the cell and the other two of the bulb as shown in Fig. $(A)$ and Fig. $(B).$
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Now, carefully look at the arrangements in which the bulb glows. Compare these with those in which the bulb does not glow.
Can you find the reason for the difference?
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