Put your building skills to the ultimate test...the earthquake test! Our earthquake simulator creates quakes in 5 levels of intensity...and comes with 30 plastic building bricks in a variety of shapes and sizes--so you can test tons of different structures to see if they topple or ...Put your building skills to the ultimate test...the earthquake test! Our earthquake simulator creates quakes in 5 levels of intensity...and comes with 30 plastic building bricks in a variety of shapes and sizes--so you can test tons of different structures to see if they topple or stand strong! Kit includes an activity book that gives kids a look into the world of earthquakes and engineering. The 10" earthquake simulator requires 4 “AA”ť batteries (not included).