Final answer:
The exact locations, types of plate boundaries, and plates involved in the formation of Mount St. Helens, San Andreas Fault, Rocky Mountains, and Mariana Trench are provided.
Step-by-step explanation:
1. Mount St. Helens:
- Exact location: Mount St. Helens is located in Washington State, United States.
- Type of plate boundary: Mount St. Helens is located near the boundary between the Juan de Fuca plate and the North American plate, which is a convergent plate boundary.
- Plates involved: The plates involved in the formation of Mount St. Helens are the Juan de Fuca plate and the North American plate.
2. San Andreas Fault:
- Exact location: The San Andreas Fault runs through California, United States.
- Type of plate boundary: The San Andreas Fault is a transform plate boundary, where the Pacific plate and the North American plate slide past each other horizontally.
- Plates involved: The plates involved in the formation of the San Andreas Fault are the Pacific plate and the North American plate.
3. Rocky Mountains:
- Exact location: The Rocky Mountains span across western North America, including the United States and Canada.
- Type of plate boundary: The formation of the Rocky Mountains is associated with a convergent plate boundary between the North American plate and the Pacific plate.
- Plates involved: The plates involved in the formation of the Rocky Mountains are the North American plate and the Pacific plate.
4. Mariana Trench:
- Exact location: The Mariana Trench is located in the western Pacific Ocean.
- Type of plate boundary: The Mariana Trench is formed at a subduction zone, which is a convergent plate boundary where the Pacific plate is subducting beneath the Philippine Sea plate.
- Plates involved: The plates involved in the formation of the Mariana Trench are the Pacific plate and the Philippine Sea plate.