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Lab 17 2 earthquakes and subduction zones 2025

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The document is a laboratory manual focused on investigating earthquakes and subduction zones, specifically analyzing the behavior of subducting plates at convergent boundaries. It outlines objectives, hypotheses, procedures for data collection and analysis related to earthquake depth and location at the Peru-Chile and Tonga Trenches, and encourages comparisons between the two regions to understand the relationship between plate density, age, and earthquake occurrence.

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What is the meaning of the word subduction?

subduction (ˌ)səb-ˈdək-shən. : the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another.

What is an example of subduction?

An example of a series of islands that formed from a genuine subduction zone is the Aleutian Islands, positioned near the border between two oceanic plates. Another example of a subduction zone would be the one that formed the Cascade Volcanoes in Oregon, Washington, and Western Canada.

What is the relationship between earthquakes and subduction zones?

The most powerful earthquakes, tsunamis, volcanic eruptions, and landslides occur in subduction zones where tectonic plates collide and one plate is thrust beneath another.

What happens at a subduction zone in tectonic plates?

When tectonic plates move, they are either pulled apart or come together. Subduction occurs in a subduction zone when two tectonic plates are pulled together. In subduction, oceanic plates always subduct under continental plates because they are denser. The mantle below melts the plate due to the high temperature.

What is subduction science?

The type of plate boundary that is known to create the most powerful and deep earthquakes are the convergent plate boundaries. Additionally, these type of earthquakes occur due to plate collisions at the subduction zones.