Unit 5 Review

Front

What is a divergent plate boundary?

Back

A divergent plate boundary is where two tectonic plates move away from each other, often resulting in the formation of new crust as magma rises to the surface.

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, earthquakes, and volcanic activity.

Front

Define a transform plate boundary.

Back

A transform plate boundary is where two tectonic plates slide past each other horizontally, causing friction and earthquakes.

Front

What is a supervolcano?

Back

A supervolcano is a large volcano that has had an eruption of magnitude 8 or greater on the Volcano Explosivity Index, capable of producing massive amounts of ash and lava.

Front

Describe the first stage in the formation of a supervolcano.

Back

The first stage involves a massive magma plume rising into the Earth's crust, building pressure beneath the surface.

Front

What occurs during a volcanic eruption?

Back

During a volcanic eruption, magma from the Earth's interior escapes to the surface, often resulting in lava flows, ash clouds, and pyroclastic flows.

Front

What is the role of pressure in the formation of a supervolcano?

Back

Pressure builds in the magma plume until it bursts through the Earth's crust, leading to a powerful eruption.

Front

What is a magma plume?

Back

A magma plume is a column of hot, molten rock that rises from deep within the Earth, often leading to volcanic activity.

Front

What geological features can form at convergent boundaries?

Back

Mountains, deep ocean trenches, and volcanic arcs can form at convergent boundaries due to the collision of tectonic plates.

Front

Explain the term 'subduction zone'.

Back

A subduction zone is a type of convergent boundary where one tectonic plate is forced under another, leading to volcanic activity and earthquakes.