To determine which plate boundary causes only earthquake activities, we need to understand the different types of plate boundaries and their associated geological activities.

1. Divergent Plate Boundary: This type of boundary occurs when two plates move away from each other. It is characterized by the formation of new crust as magma rises to fill the gap. While earthquakes can occur at divergent plate boundaries, they are not the only geological activity. Volcanic eruptions and the creation of mid-ocean ridges are also common.

2. Convergent Plate Boundary: This boundary occurs when two plates collide or move towards each other. There are three types of convergent plate boundaries: oceanic-oceanic, oceanic-continental, and continental-continental.

a. Oceanic-Oceanic Convergence: When two oceanic plates collide, one plate is usually subducted beneath the other. This subduction zone is associated with intense seismic activity, including earthquakes. However, volcanic activity, such as the formation of volcanic arcs, can also occur.

b. Oceanic-Continental Convergence: When an oceanic plate collides with a continental plate, the denser oceanic plate is usually subducted beneath the continental plate. This subduction zone is also associated with earthquakes, as well as volcanic activity, such as the formation of volcanic arcs and mountain ranges.

c. Continental-Continental Convergence: When two continental plates collide, neither plate is subducted due to their similar densities. Instead, the collision leads to intense folding, faulting, and uplift, resulting in the formation of mountain ranges. While earthquakes are common in these areas, they are not the only geological activity.

3. Transform Plate Boundary: This boundary occurs when two plates slide past each other horizontally. Transform plate boundaries are known for their high frequency of earthquakes. However, they do not typically involve volcanic activity or the creation of new crust.

Based on the information provided, the plate boundary that causes only earthquake activities is the Transform Plate Boundary.

Question

To determine which plate boundary causes only earthquake activities, we need to understand the different types of plate boundaries and their associated geological activities.

1. Divergent Plate Boundary: This type of boundary occurs when two plates move away from each other. It is characterized by the formation of new crust as magma rises to fill the gap. While earthquakes can occur at divergent plate boundaries, they are not the only geological activity. Volcanic eruptions and the creation of mid-ocean ridges are also common.

2. Convergent Plate Boundary: This boundary occurs when two plates collide or move towards each other. There are three types of convergent plate boundaries: oceanic-oceanic, oceanic-continental, and continental-continental.

a. Oceanic-Oceanic Convergence: When two oceanic plates collide, one plate is usually subducted beneath the other. This subduction zone is associated with intense seismic activity, including earthquakes. However, volcanic activity, such as the formation of volcanic arcs, can also occur.

b. Oceanic-Continental Convergence: When an oceanic plate collides with a continental plate, the denser oceanic plate is usually subducted beneath the continental plate. This subduction zone is also associated with earthquakes, as well as volcanic activity, such as the formation of volcanic arcs and mountain ranges.

c. Continental-Continental Convergence: When two continental plates collide, neither plate is subducted due to their similar densities. Instead, the collision leads to intense folding, faulting, and uplift, resulting in the formation of mountain ranges. While earthquakes are common in these areas, they are not the only geological activity.

3. Transform Plate Boundary: This boundary occurs when two plates slide past each other horizontally. Transform plate boundaries are known for their high frequency of earthquakes. However, they do not typically involve volcanic activity or the creation of new crust.

Based on the information provided, the plate boundary that causes only earthquake activities is the Transform Plate Boundary.

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