Question

Which of the following statements about plate interactions are true? (Select the 3 that apply.)

Group of answer choices

At the Cascadia Subduction Zone, the Juan de Fuca plate is subducting under the North American plate. This is an example of a convergent plate boundary.

The Earth's tectonic plates are not currently moving.

When two oceanic plates collide, subduction does not result.

Extensional stress is present at divergent plate boundaries, such as mid-ocean ridges.

The San Andreas Fault is a transform boundary, where the Pacific plate is moving northwest relative to the North American Plate.

Answer 1

The three true statements about plate interactions are: 1) The Juan de Fuca plate is subducting under the North American plate at the Cascadia Subduction Zone, 2) Divergent plate boundaries experience extensional stress, and 3) The San Andreas Fault is a transform boundary where the Pacific plate is moving northwest relative to the North American Plate.

Step-by-step explanation:

The three statements about plate interactions that are true are:

1. At the Cascadia Subduction Zone, the Juan de Fuca plate is subducting under the North American plate. This is an example of a convergent plate boundary. Convergent plate boundaries occur when two plates collide and one plate is forced beneath the other. In this case, the denser Juan de Fuca plate is subducting beneath the North American plate.
2. Extensional stress is present at divergent plate boundaries, such as mid-ocean ridges. Divergent plate boundaries occur when two plates move away from each other, creating a gap that is filled with molten material from the mantle. This results in the formation of new crust.
3. The San Andreas Fault is a transform boundary, where the Pacific plate is moving northwest relative to the North American Plate. Transform plate boundaries occur when two plates slide past each other horizontally. In this case, the Pacific plate is moving northwest relative to the North American plate along the San Andreas Fault.

Answer 2

Step-by-step explanation:

The three statements that are true are:

At the Cascadia Subduction Zone, the Juan de Fuca plate is subducting under the North American plate. This is an example of a convergent plate boundary.

Extensional stress is present at divergent plate boundaries, such as mid-ocean ridges.

The San Andreas Fault is a transform boundary, where the Pacific plate is moving northwest relative to the North American Plate.

The following statements are false:

The Earth's tectonic plates are not currently moving. This statement is false because tectonic plates are constantly moving due to the convective motion of the mantle.

When two oceanic plates collide, subduction does not result. This statement is false because when two oceanic plates collide, the denser plate will subduct beneath the other plate, leading to the formation of subduction zones.