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Describing and Measuring Earthquakes

Ngā Whāinga Ako

Types of Earthquake Waves

P Waves

S Waves

L Waves

Whakakite: Slinky

Ngā Whāinga Ako

Measuring Earthquakes


The energy ________ travels outwards as _____. The point in the Earth’s crust where this happens is called the _____, the point directly above the focus on the Earth’s surface is called the _________. Seismologists use ___________ to determine the magnitude and ________ of earthquakes.

Words: seismographs, focus, location, waves, epicentre, released



We can see that the epicenter is the closest place on the surface to the focus. This is why the s waves get there first.

Richter Scale

Mercalli Intensity Scale