Front

What geological feature is commonly formed at a divergent plate boundary?

Back

Mid-ocean ridges.

Front

What evidence supports the idea that continents were once connected?

Back

Same types and age of fossils AND rocks are found in the rock layers on both sides of the ocean.

Front

Which evidence was NOT used to support Wegener's Continental Drift Theory (Pangaea)?

Back

Seafloor Spreading Data.

Front

What evidence confirms that identical rock layers found across oceans were once part of the same body of rock?

Back

Fossils of the same species and age found in the rock layers on both sides of the ocean.

Front

What causes the movement of tectonic plates?

Back

Convection currents in the Earth's mantle.

Front

What is a tectonic plate?

Back

A large, rigid slab of solid rock that makes up the Earth's lithosphere.

Front

What is the theory of plate tectonics?

Back

The theory that the Earth's outer shell is divided into several plates that glide over the mantle.

Front

What geological feature is formed at a convergent plate boundary?

Back

Mountain ranges or deep ocean trenches.

Front

What is subduction?

Back

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

Front

What are transform boundaries?

Back

Boundaries where two tectonic plates slide past each other horizontally.