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Students will examine real data of earthquake occurrence plotted by depth. A class discussion will lead to the understanding that the deepest earthquakes occur at subduction zones.
Ideas for introducing Lesson 3:
When we collect data on earthquakes, what information do we collect? Elicit
the response of where and when earthquakes occur, the intensity of the earthquake,
and the depth of the epicenter. Ask the students if they think that there
is a connection between the depth of the epicenter and the type of plate
boundary? And if so, why. Let’s explore!
Activities in this lesson: one
Classroom time: 1 class periods
From this lesson, students will understand that:
- There is a correlation between earthquake depth and plate boundaries.
- The deepest earthquakes occur at subduction zones (CA Standard: 6.1c)
Vocabulary: Convergent, divergent, epicenter, plate boundary, sea-floor spreading, subduction zone