To many folks, the phrase “dark side of the moon” suggests there’s a place you could go to on the moon which is perpetually cloaked in darkness. This is incorrect! Learn more on this Moment of Science.
Once the electric circuit is completed, an electric current begins to run though a cylindrical coil of wire, or solenoid. The electric current creates an electromagnetic field around the solenoid.
Surprisingly, even though there is no light to catch, the sunflower will continue to bend every day just as it did when it was outside. This is a classic example of what scientists call a circadian rhythm — it’s a daily cycle of behavior that is internal to the organism, rather than being solely triggered by the environment.