8.9AB Plate Tectonics

Front

What is a mid-ocean ridge?

Back

A mid-ocean ridge is an underwater mountain range formed by plate tectonics, where two tectonic plates are moving apart.

Front

What type of plate boundary occurs when two tectonic plates move away from each other?

Back

Divergent boundary.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates push toward each other, often resulting in mountain formation or subduction.

Front

What geological feature is commonly formed at convergent boundaries?

Back

Mountain ranges.

Front

What happens at a transform boundary?

Back

At a transform boundary, two tectonic plates slide past each other horizontally, causing earthquakes.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle.

Front

What type of boundary is formed when two continental plates collide?

Back

Convergent boundary.

Front

What is the significance of volcanic activity in relation to plate tectonics?

Back

Volcanic activity often occurs at plate boundaries, especially at divergent and convergent boundaries.

Front

What is the difference between oceanic and continental plates?

Back

Oceanic plates are denser and thinner than continental plates, which are thicker and less dense.

Front

What is a rift valley?

Back

A rift valley is a lowland region formed by the divergence of tectonic plates, often filled with water.