Plate Motion Chapter 2 Flashcard Review

Front

What is a divergent plate boundary?

Back

A divergent plate boundary is where two tectonic plates move away from each other, often creating mid-ocean ridges.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's outer layer that float on the semi-fluid mantle beneath them.

Front

Where are trenches typically found?

Back

Trenches are found in the ocean where two tectonic plates are converging, or coming together.

Front

What is the composition of the mantle?

Back

The mantle is made of soft, solid rock that allows tectonic plates to move.

Front

What happens at a convergent plate boundary?

Back

At a convergent plate boundary, two tectonic plates collide, which can lead to the formation of mountains or trenches.

Front

What is the significance of mid-ocean ridges?

Back

Mid-ocean ridges are underwater mountain ranges formed by divergent plate boundaries, where new oceanic crust is created.

Front

How do tectonic plates move?

Back

Tectonic plates move due to convection currents in the mantle, which is caused by the heat from the Earth's core.

Front

What is a transform plate boundary?

Back

A transform plate boundary is where two tectonic plates slide past each other horizontally.

Front

What is the effect of plate divergence on continents?

Back

Plate divergence can cause continents to move farther apart over time, as seen with Africa and South America.

Front

What geological features are formed by converging plates?

Back

Converging plates can form mountains, volcanic arcs, and oceanic trenches.