Stock Footage0:30
Getty Images

Train passing by

Pre-K - Higher Ed
Train passing by
Stock Footage0:26
Getty Images

DC Milliamps analogue power supply

Pre-K - Higher Ed
DC Milliamps analogue power supply
Stock Footage0:10
Getty Images

AC Plug Into Outlet (US)

Pre-K - Higher Ed
An electrical cord is plugged into a U.S.A. wall outlet, then unplugged. SD PAL 4:3
Stock Footage0:16
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stabilizer display

Pre-K - Higher Ed
stabilizer voltage protection devices.
Stock Footage0:06
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wind turbine detail,Loop

Pre-K - Higher Ed
Windmill with alpha mask, 3D Animation, seamless
Stock Footage0:29
Getty Images

stabilizer display

Pre-K - Higher Ed
stabilizer voltage protection devices.
Stock Footage0:06
Getty Images

Electricity pylons in the evening - Hyperlapse

Pre-K - Higher Ed
Motion time lapse (hyperlapse) video of electricity pylons with road traffic, blue sky, moving clouds and the moon. HD 1080p.
Stock Footage0:15
Getty Images

Solarized guitar animation

Pre-K - Higher Ed
Fretboard head with pegs closeup swings over light source. Mostly dark scene, can be dyed by multiplication by color filter.
Stock Footage0:18
Getty Images

Power lines with grass blowing and blue sky.

Pre-K - Higher Ed
Power lines with grass blowing.
Stock Footage0:21
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Power lines with grass blowing and blue sky.

Pre-K - Higher Ed
power lines with gress blowing.
Stock Footage0:21
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Wind Turbines makeing power

Pre-K - Higher Ed
wind turbines.
Stock Footage0:24
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Wind Turbines makeing power

Pre-K - Higher Ed
wind turbines.
Stock Footage0:26
Getty Images

powertower with windmills in the back ground

Pre-K - Higher Ed
shot through a power poll to see the windmills in the background.
Stock Footage0:19
Stock Footage0:15
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Wind Turbines makeing power

Pre-K - Higher Ed
wind turbines.
Stock Footage0:22
Getty Images

Wind Turbines makeing power

Pre-K - Higher Ed
wind turbines.
Stock Footage0:23
Getty Images

power lines and grass blowing.

Pre-K - Higher Ed
power line with grass blowing in front.
Stock Footage0:08
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HD Timelapse:power line detail

Pre-K - Higher Ed
HD Timelapse:power line detail
Stock Footage0:20
Getty Images

AERIAL Solar Panels On An Industrial Building

Pre-K - Higher Ed
AERIAL Solar Panels On An Industrial Building
Stock Footage0:19
Getty Images

AERIAL Solar Panels On A Commercial Building

Pre-K - Higher Ed
AERIAL Solar Panels On A Commercial Building
Stock Footage0:20
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Microphones

Pre-K - Higher Ed
Microphones
Stock Footage0:10
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Fresnel

Pre-K - Higher Ed
Fresnel
Instructional Video
PBS

Pbs Learning Media: Ac Versus Dc: What's the Difference?

9th - 10th
This animated essay from "American Experience" explains the difference between alternating and direct electric current and offers in-depth explanations about the role played by a battery, light bulb, wire, and generator. [2:27]
Instructional Video
Other

Chris Mahl: Ac vs. Dc

9th - 10th
Teacher Chris Mahl explains the differences between alternating current and direct current. [6:23]