Question

1. dr. choi and his team of geologists have been studying gps data that shows that two plates moved apart. which diagram shows what happened between the two plates as they moved away from each other? a diagram a: soft, solid rock from underneath the plates rose and hardened, adding solid rock to the edges of both plates. b diagram b: sand and dirt filled in the gap that was created by the plates moving apart. c diagram c: ocean water filled in the gap that was created by the plates moving apart. d diagram d: a new plate from underneath filled in the gap that was created by the plates moving apart.

Explanation:

When two tectonic plates move apart, at a divergent - plate boundary, magma from the mantle rises up. This magma cools and solidifies to form new crust, adding solid rock to the edges of the separating plates. Sand and dirt filling the gap (Option B) is not the main process. Ocean water filling the gap (Option C) is a secondary effect after new crust formation. A new plate from underneath filling the gap (Option D) is incorrect as it's magma that rises and solidifies to form new crust, not an entire new plate.

Answer:

A. Diagram A: Soft, solid rock from underneath the plates rose and hardened, adding solid rock to the edges of both plates.