The subducting Juan de Fuca Plate is only 10 - to 15-million-years old and is warm and buoyant. However, as it is subducted, its density increases, causing a buildup of stress.

a. True

b. False

a. True

Explanation:

The Plate is a tectonic plate and generated by the subduction of the ridge under the northern portion of the Western side of the north Americana plate and is now are subducted under the northern America plate. The plate is approx 250,000 km in length. Moves in the northeast direction with a speed of 26 m per year. The plate is itself fractured into three pieces and due to the stress the earthquakes with a high magnitude of 8-9 are created