Chapter 3
CIRCUITS
Imagine a racetrack. The cars are revving up at the starting line and someone waves the flag. And . . . they’re off! As the cars speed around the track, nothing gets in their way. They keep going around and around until someone waves the flag to signal the end of the race. A traveling path that begins and ends at the same spot is called a circuit. Racetracks are circuits. Do you have a flowing lazy river at your local pool? That’s another kind of circuit. Can you think of other circuits you’ve come across?
ESSENTIAL QUESTION
How does electricity travel across the country and into our homes and businesses?
Circuits are very useful, especially when it comes to electricity.
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