Plate Tectonics and Geological Processes

This video explains the concept of tectonic plates, their movement, and the Earth's structure. It covers the role of convection currents in plate movement and describes different types of plate boundaries, including divergent and convergent boundaries. The video also touches on the historical context of tectonic theory and the Wilson cycle.

What is the primary focus of the video?

• The structure of the Earth's core

• The movement and interaction of tectonic plates

• The formation of mountains

• The history of geology

What is the lithosphere composed of?

• Only the Earth's crust

• Only the upper mantle

• The Earth's crust and a part of the upper mantle

• The entire mantle

At what temperature do rocks in the asthenosphere start behaving ductile?

• 500-600 degrees

• 800-900 degrees

• 1200-1300 degrees

• 1500-1600 degrees

What causes the convection currents in the asthenosphere?

• Tidal forces

• Volcanic eruptions

• Earthquakes

• Differences in rock density due to temperature variations

What happens at a transform boundary?

• Plates subduct under each other

• Plates slide past each other

• Plates move towards each other

• Plates move away from each other

Which regions are examples of transform boundaries?

• California's San Andreas Fault and Turkey's North Anatolian Fault

• The Mid-Atlantic Ridge and the East Pacific Rise

• The Himalayas and the Andes

• The Mariana Trench and the Tonga Trench

What is formed at divergent boundaries?

• New lithosphere

• Mountains

• Earthquakes

• Subduction zones

What is a subduction zone?

• A place where one plate slides past another

• A place where new lithosphere is formed

• A place where two plates move away from each other

• A place where one plate is forced under another

What happens to the lithosphere at convergent boundaries?

• It is created

• It is destroyed

• It remains unchanged

• It becomes thicker

What does the theory of plate tectonics explain?

• The formation of the Earth's core

• The formation of the solar system

• The movement and interaction of Earth's plates

• The origin of life on Earth