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Sunday 26 October 2014

Week 3 Question of the Week Selfie

Why can birds stand on power lines without being electrocuted?




What do you think?  I don't know the answer but I would like to find out.  Can you help me?

23 comments:

  1. i think because they have very hard protection on their bodies so they dont feel anything when they stand on it

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  2. The reason that birds can sit unharmed on power lines is that no current flows through them because by sitting on one line only, they are not completing the electrical circuit.

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  3. I think because birds have different types of legs so that's why they can stand on power lines without getting electrocuted

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  4. I think its because that their legs is different to our legs maybe.

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  5. I think its because they have strong protection or there might be something we don't know

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  6. William☺☻☺☻29 October 2014 at 15:52

    I think its because how their feet are different to every other animal (including us).

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  7. I think the birds don't get electrocuted is because the bird is standing on the power line which stops the power to go through the circuit

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  8. When the bird perches on a live wire,the body becomes charged-for the moment it's at the same voltage as the wire. But no current flows into the body.A body is a poor conductor compared to copper wire,so there's no reason for electrons to take a detour through the bird. More importantly,electrons current flow from a region of high voltage to one of low voltage.The drifting current in effect,ignores the bird.

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  9. Because there is an insulator (something that electricity can not pass through) around the conductor in the middle of the wire

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  10. I think maybe beasuase there body and legs are different from other animals

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  11. i think the i know why they don't get electronict because they stand stiil

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  12. they don't get electrocuted because there body has a high resistance so they cuurrent maybe deosn't go through the bird and go through the power line because birds have a diferent type of body than us so they survive

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  13. Because their not touching the ground

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  14. I'm impressed with some of the ideas you are all coming up with. Great lateraly thinking and I see some research has taken place as well.

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  15. Maybe their feet are resistant to the power lines.

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  16. ♣♣Calico♣♣30 October 2014 at 08:34

    Because they are they might not be able to feel the electric shock

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  17. because their light and they might not feel the electrical shock

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  18. Because birds are awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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  19. Hi,

    Great Question! Well, I think birds don't get shocked because they're not good conductors of electricity. Great ideas too!

    Tania

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  20. because the birds are not making a circut

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  21. SABAH ♥♥♥♥♥31 October 2014 at 11:00

    maybe because birds have special feet to help them stand on it

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  22. I think that they have special feet.

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  23. Like all energy, electricity seeks equilibrium, or balance. That means electricity will flow from high-energy areas to areas of less energy, always using the path of least resistance. So if the bird has one foot on our original wire, and the other foot on, for example, the ground or on a different wire with less voltage, the bird would be electrocuted. The electricity would pass through the bird on its way from the high-voltage line to the lower-voltage line or the ground.

    But as long as both of the bird’s feet are on the same wire (or wires of the same voltage), the bird is safe. The current doesn’t have anywhere else to go, so the electricity won’t pass through the bird–it stays on the path of least resistance, the wire.

    Don’t Try This At Home!

    This would work for humans, too–if you were to hang suspended from one of these wires, you wouldn’t be electrocuted, as long as you didn’t get too close to anything else, like a telephone pole or the ground.

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