Plate Tectonics and Boundaries

The video tutorial explores the dynamics of plate tectonics, focusing on the movement of plates and ridges, and the concept of velocity diagrams. It delves into complex interactions such as subduction and the formation of new plate boundaries. A case study on the San Andreas Fault illustrates the application of these concepts, highlighting the discovery of a microplate and a slow subduction zone. The tutorial concludes with a summary of key learnings, emphasizing the importance of understanding plate motion and boundary evolution over time.

What is the velocity of the ridge compared to the other plate?

• Half the velocity

• Same velocity

• One-third the velocity

• Twice the velocity

What happens to Plate B over geologic time?

• It disappears

• It grows larger

• It remains the same size

• It splits into two

What is formed when the ridge touches the subduction zone?

• A mountain range

• A new plate boundary

• A fault line

• A volcano

What is a velocity diagram used for?

• To calculate the missing velocity between plates

• To map the seafloor

• To measure the depth of the ocean

• To predict earthquakes

What type of plate boundary is formed when the velocity of A vs C is parallel to the plate boundary?

• Divergent boundary

• Subduction zone

• Convergent boundary

• Transform boundary

Who proposed the existence of the Farallon Plate?

• Charles Darwin

• Tanya Atwater

• Harry Hess

• Alfred Wegener

What was the main mystery about the San Andreas Fault?

• Its direction change

• Its age

• Its depth

• Its length

What is the characteristic of the subduction zone near the Farallon Plate?

• Very deep trench

• High number of earthquakes

• Slow subduction

• Cold lithosphere

What is the significance of velocity triangles in plate tectonics?

• They predict volcanic eruptions

• They show how plates are moving

• They measure the age of plates

• They map the ocean floor

What concept helps understand the evolution of plates over time?

• Seafloor spreading

• Continental drift

• Euler poles

• Magnetic anomalies