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This lab activity has learners create a pendulum with a one-second period.

In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.

Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

Learners build and investigate pendulums of different lengths. They discover that the longer the string of the pendulum, the longer the time it takes to swing.