Formation of Volcanic Mountains and Colliding Plates

The video explains the formation of volcanic mountains in the Cascade Range due to the movement of lithospheric plates. It covers the concept of plate tectonics, focusing on convergent boundaries and subduction zones, particularly the Juan de Fuca Plate. The Ring of Fire is highlighted for its volcanic and earthquake activity. The video also discusses how continental convergence leads to mountain formation, using the Himalayas as an example.

What geological process is primarily responsible for the formation of volcanic mountains in the Cascade Range?

• Deposition of volcanic ash

• Weathering of igneous rocks

• Erosion of sedimentary rocks

• Movement of lithospheric plates

What is the term for the boundary where two lithospheric plates collide?

• Divergent boundary

• Transform boundary

• Convergent boundary

• Neutral boundary

What happens to the oceanic lithosphere in subduction zones?

• It remains unchanged

• It is destroyed as it is subducted

• It becomes part of the continental crust

• It is uplifted to form mountains

Why is the Pacific Plate area often referred to as the Ring of Fire?

• It is shaped like a ring

• It is known for its warm climate

• It is surrounded by deserts

• It has a high concentration of volcanoes and earthquakes

What geological feature is formed when continents converge, as seen with the Himalayas?

• Volcanic islands

• Ocean basins

• Mountain ranges

• Deep-sea trenches