WEBVTT

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>> WHEN YOU TURN ON A LAMP,
ELECTRICITY FLOWS.

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AND TURNS IT INTO LIGHT AND
HEAT.

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THE ELECTRICITY WE USE IN OUR
HOMES AND SCHOOLS STARTS AT A

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POWER PLANT.

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HERE IN IDAHO, A LOT OF
ELECTRICITY COMES FROM

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HYDROELECTRIC POWER.

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THESE PLANTS USE WATER TO TURN A
TURBINE IN A GENERATOR, A

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GENERATOR IS BASICALLY A BIG
MAGNET SURROUNDED BY A COIL OF

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COPPER WIRE.

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AS THE MAGNET SPINS, IT PRODUCES
ELECTRICITY.

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NOW, ELECTRICITY DOESN'T DO YOU
MUCH GOOD UNTIL IT MOVES.

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ELECTRICITY FLOWING THROUGH
WIRES IS CALLED AN ELECTRIC

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CURRENT.

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ELECTRICITY JUST WON'T FLOW
THROUGH ANYTHING.

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SOME MATERIALS CONDUCT
ELECTRICITY BETTER THAN OTHERS.

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ELECTRICITY CAN'T GO THROUGH
PLASTIC OR RUBBER, THOSE THINGS

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ARE KNOWN AS INSULATORS.

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THINGS LIKE METAL WIRES ARE
CALLED CONDUCTORS.

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ONCE ELECTRICITY IS GENERATED AT
THE POWER PLANT, IT FLOWS TO

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YOUR HOME OR SCHOOL OVER WIRE.

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ALL THE WIRES TOGETHER ARE KNOWN
AS A GRID.

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POWER COMPANIES ACROSS THE
COUNTRY WORK TOGETHER TO MAKE

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SURE THE POWER GRID IS FULL AND
FLOWING.

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THAT WAY WHEN YOU TURN ON YOUR
TV, ELECTRICITY POWERS IT UP.

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YOU CAN FIND ELECTRICITY IN
OTHER PLACES.

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IN 1752, BENJAMIN FRANKLIN
PROVED THUNDER CLOUDS CONTAIN

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ELECTRICITY.

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YOU KNOW IT AS LIGHTNING.

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STATIC ELECTRICITY IS AROUND ALL
OF US.

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IT'S CAUSED BY FRICTION.

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LIKE WHEN YOU RUB TWO SURFACES
TOGETHER.

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HAVE YOU EVER BEEN SHOCKED?

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THAT'S STATIC ELECTRICITY.

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THERE'S LOACT IN BATTERIES, WE
EVEN HAVE ELECTRICITY IN OUR

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BODIES.

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BUT DON'T FORGET, ELECTRICITY
CAN HURT YOU, TOO.

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DON'T GET NEAR DOWNED POWER
LINES, DON'T PLAY WITH ELECTRIC

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WIRES IN YOUR HOUSE, AND STAY
INSIDE WHEN THERE'S LIGHTNING.

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ELECTRICITY IS A FORCE TO
RESPECT.