Plate Tectonics

Front

What is Pangea?

Back

Pangea was a supercontinent that existed around 200 million years ago, where all the continents were joined together.

Front

What type of boundary is formed when two tectonic plates slide past each other?

Back

Transform boundary.

Front

What evidence did Alfred Wegener use to support his theory of continental drift?

Back

The shape of the continents, similar fossils found on separate continents, and tree fossils found in odd places.

Front

What geological feature is created by convergent plate movement?

Back

Mountains.

Front

What is sea-floor spreading?

Back

Sea-floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other.

Front

What is a divergent boundary?

Back

A divergent boundary is where two tectonic plates move away from each other, often creating new crust.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates collide, leading to the formation of mountains or subduction zones.

Front

What is subduction?

Back

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

Front

What are mid-ocean ridges?

Back

Mid-ocean ridges are underwater mountain ranges formed by the upwelling of magma at divergent boundaries.