4 Water rushes onto shore.


3 Waves grow taller in shallow waters.


2 D eep ocean waves build.


1


Energy is released by the earthquake.


Creating a Monster Wave A devastating earthquake near Japan triggered a powerful tsunami.


Working Together Other engineers designed and built safer skyscrapers. T ey made these skyscrapers so that they swayed during the quake instead of falling. Quakes oſt en topple skyscrapers. T ey also built many skyscrapers


on rollers. T at way the buildings slid back and forth during the quake and tsunami, but didn’t fall. Around the world, engineers are


coming up with better ways to warn people about earthquakes and make safer buildings. Scientists hope to learn more, too, so that they can give people earlier warnings.


15 WORDWISE


earthquake: the sudden motion of Earth’s surface due to shifting along a fault fault: a fracture in Earth’s surface that slips


plate: a large piece of Earth’s crust that moves relative to other pieces


seismic waves: vibrations generated by an earthquake


seismograph: an instrument that detects and records movements or vibrations


tsunami: a fast moving, powerful wave triggered by an underwater earthquake or volcano


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