Tectonic Plates and Earth's Dynamic Boundaries

The video explains the theory of plate tectonics, describing Earth's lithosphere as divided into tectonic plates that float on the asthenosphere. It details the three types of plate boundaries: divergent, convergent, and transform, and provides examples like the Great Rift Valley and the San Andreas Fault. The movement of these plates shapes Earth's surface, creating features such as mountain ranges and valleys.

What is the outer layer of Earth called, which is broken into tectonic plates?

• Asthenosphere

• Lithosphere

• Core

• Mantle

What layer do tectonic plates float on?

• Lithosphere

• Asthenosphere

• Crust

• Core

How many large tectonic plates is Earth's crust currently divided into?

• Five

• Seven

• Nine

• Eleven

What type of boundary is formed when two plates move away from each other?

• Static

• Divergent

• Transformed

• Convergent

Which famous fault is an example of a transformed boundary?

• Himalayan Fault

• San Andreas Fault

• Mid-Atlantic Ridge

• Great Rift Valley

What happens at a convergent boundary?

• Plates remain stationary

• Plates collide

• Plates slide past each other

• Plates move apart

What geological feature is created by diverging plates on land?

• Mountain ranges

• Valleys

• Islands

• Troughs

What is the potential future impact of the Great Rift Valley's spreading?

• Creation of a new ocean

• Formation of a new mountain range

• Conversion of eastern Africa into an island

• Subduction of a tectonic plate