Earthquake

Frizzle's class heads to the Earthquake Science Center for a field trip, but the ground begins to shake before they can explore. When the quake hits, the students learn how scientists study and measure seismic activity, discovering what causes the earth to rumble. The story mixes adventure with simple explanations of plate tectonics and safety tips. Aimed at early readers, it brings the excitement of the Magic School Bus into a real-world earth-science setting.