1 Define the term
2 What is the term
3 Both
4 Define the term
5 What is the term
100

Asthenoshpere

What is the soft flowing layer under the lithosphere that allows movement?

100

Massive fragment of the lithosphere 

What is a tectonic plate?

100

Tectonic Plate 

What is a massive fragment of the lithosphere?

100

Lithosphere

What is the outermost shell of our planet that is made up of the crust and upper mantle?

100

The place where two tectonic plates meet

What is a plate boundary?

200

Plate Boundary

What is the place where two tectonic plates meet?

200

The process that creates new oceanic crust at ridges. 

What is seafloor spreading?

200

Subduction

What is when one tectonic plate sinks beneath another into the mantle?

200

Fault Line 

What is a fracture in the Earth's crust where movement occurs?

200

A fracture in Earth's crust where movement occurs.

What is a fault line?

300

Ridge Push 

What is the force that moves plates away from mid-ocean ridges?

300

When one tectonic plate sinks beneath another into the mantle.

What is subduction?
300
The primary force caused by a sinking tectonic plate pulling the rest along with it.

What is slab pull?

300

Slab Pull

What is the primary force caused by a sinking tectonic plate pulling the rest along with it?

300

A localized column of hot mantle material that rises toward the crust.

What is a magma plume?

400

Magma Plume

What is a localized column of hot mantle material that rises toward the crust?
400

The soft flowing layer that allows the tectonic plates to move.

What is the asthenosphere?

400

The force that moves plates away from mid-ocean ridges.

What is ridge push?

400

Seafloor Spreading 

What is the process that creates new oceanic crust at ridges 

400

The outermost shell of our planet that is made up of the crust and upper mantle. 

What is the lithosphere?

500

Continental Drift Theory

What is the theory of continents slowly move over Earth's surface?

500

The Comprehensive theory that Earth's lithosphere is broken into moving plates.

What is the plate tectonic theory?
500

Plate Tectonic Theory

What is the theory that the Earth's lithosphere is broken into moving plates?

500

The theory that states that continents slowly move over the Earth's surface. 

What is the continental drift theory?