Front

What is a rift valley?

Back

A valley formed by the separation of continental crust.

Front

What is a deep ocean trench?

Back

A valley in the ocean created when one lithospheric plate subducts under another.

Front

What is a plate boundary?

Back

The place where two tectonic plates meet.

Front

In which direction would the next Hawaiian island form from the current islands?

Back

Southeast (SE).

Front

How often does plate tectonics occur?

Back

Plate tectonics is occurring constantly.

Front

What is a tectonic plate?

Back

Large sections of the Earth's lithosphere that move and interact with each other.

Front

What is subduction?

Back

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

Front

What is an oceanic ridge?

Back

An underwater mountain range formed by plate tectonics.

Front

What is the asthenosphere?

Back

The semi-fluid layer of the mantle on which tectonic plates float.

Front

What is continental drift?

Back

The theory that continents have moved over geological time to their current locations.