Plate Tectonics and Plate Boundaries

Front

What is the theory of plate tectonics?

Back

The theory of plate tectonics explains the movement of the Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere beneath. This movement is responsible for geological phenomena such as earthquakes, volcanic activity, and the formation of mountain ranges.

Front

What occurs at a subduction zone?

Back

At a subduction zone, one tectonic plate (usually oceanic) is forced under another plate (usually continental), leading to the formation of deep ocean trenches, volcanic arcs, and frequent earthquakes.

Front

What are the four types of plate boundaries?

Back

The four types of plate boundaries are: 1) Convergent (Subduction and Collision), 2) Divergent, 3) Transform.

Front

What happens at a divergent boundary?

Back

At a divergent boundary, tectonic plates move apart from each other, leading to the formation of new crust as magma rises to the surface, often resulting in mid-ocean ridges.

Front

What is a transform boundary?

Back

A transform boundary is where two tectonic plates slide past each other horizontally. This movement can cause earthquakes along faults.

Front

Define convergent boundary.

Back

A convergent boundary is where two tectonic plates move towards each other, which can result in subduction or continental collision, leading to mountain building.

Front

What is a fault?

Back

A fault is a fracture or zone of fractures between two blocks of rock, which can result in earthquakes when stress is released.

Front

What is the Ring of Fire?

Back

The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur, primarily due to tectonic plate movements.

Front

What is the difference between convergent subduction and convergent collision?

Back

Convergent subduction occurs when an oceanic plate is forced under a continental plate, while convergent collision occurs when two continental plates collide, leading to mountain formation.

Front

What geological features are associated with divergent boundaries?

Back

Divergent boundaries are associated with mid-ocean ridges, rift valleys, and volcanic activity as new crust is formed.