Material:
Un tub màgic
Tot l'alumnat de l'equip primer i de la classe després
Procediment:
Ens donem tots les mans fent una rotllana. Dos companys s'han de deixar les mans per agafar l'extrem A l'un i l'extrem B l'altra per la part platejada. Sense por!!
Resultat:
Només cal que sigueu una mica atrevits i ja podreu explicar què ha passat!
Ara ja podeu provar de fer una rotllana amb tota la classe, a veure què passa ara.
A quina conclusió heu arribat?
A quin dels elements bàsic dels circuits elèctrics ens assemblem?
La electricidad aplicada en la medicina: De Frankenstein al desfribrilador
https://blog.holaluz.com/electricidad-y-medicina-de-frankenstein-al-desfibrilador/
https://blog.holaluz.com/tu-cuerpo-es-una-central-electrica/
Cervell
Cor
Desfibrilador
https://health.howstuffworks.com/human-body/systems/nervous-system/human-body-make-electricity.htm
https://kids.nationalgeographic.com/explore/science/your-amazing-brain/
The body’s total voltage from 70 trillion volts down to a more accurate value of 3.5 trillion volts! The calculation is based on the following: The average “membrane potential” for a cell is 70 millivolts OR .07 volts (this the electrical charge difference between the inside of the cell, separated by the cell membrane, from the charge just outside the cell membrane). There are 50 trillion cells X .07volts = 3.5 trillion volts.
https://www.brucelipton.com/blog/what-are-the-volts-electricity-your-human-body
Electricity travels at the speed of light. That’s more than 186,000 miles per second! Can you even begin to imagine that? That’s seriously fast.
A spark of static electricity can measure up to 3,000 volts.
A bolt of lightning can measure up to 3,000,000 volts, and it lasts less than one second!
One single lightning bolt can light up 100 powerful lamps for an entire day, or make lots and lots of toast, in fact a couple of thousand pieces of toast. Don’t think you’d be able to eat all that!
A lightning bolt can get really, really hot and reach temperatures of 30,000 °C (54,000 °F). Now that is hot, hot, hot!
A 600 megawatt natural gas plant can power 220,000 homes.
Now this will amaze you. Electric eels can produce strong electric shocks of around 500 volts. They use this to hunt and to protect themselves too. That’s pretty cool.
A popular way to create electricity is through something called hydropower. Hydropower is a process where electricity is made by water which spins turbines attached to generators. Pretty neat!