Plate Motion

Front

What causes earthquakes?

Back

Earthquakes are caused by plate motion.

Front

What is Earth's outer layer made of underneath the surface?

Back

Earth's outer layer is made of hard, solid rock.

Front

What is the composition of Earth's outer layer underneath both soil and ocean?

Back

Underneath both the soil and the ocean, Earth’s outer layer is made of hard, solid rock.

Front

What type of boundary is formed when plates move towards each other?

Back

Convergent boundary.

Front

What happens at a convergent plate boundary?

Back

At a convergent plate boundary, tectonic plates collide, which can cause earthquakes and create mountains.

Front

What is a divergent plate boundary?

Back

A divergent plate boundary is where tectonic plates move away from each other.

Front

What geological features can form at divergent boundaries?

Back

Mid-ocean ridges and rift valleys can form at divergent boundaries.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the asthenosphere?

Back

The asthenosphere is the semi-fluid layer beneath the lithosphere that allows tectonic plates to move.

Front

What is subduction?

Back

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