Plate Motion Unit Review

Front

What is the Theory of Plate Tectonics?

Back

The Theory of Plate Tectonics states that the Earth's lithosphere is divided into tectonic plates that are in constant, slow motion.

Front

What evidence do fossils provide in support of plate tectonics?

Back

Fossils of the same species found on different continents support the theory that these continents were once joined together and have since moved apart.

Front

Who proposed the Theory of Sea-floor Spreading?

Back

Harry Hess proposed the Theory of Sea-floor Spreading.

Front

Are warm materials more dense than cool materials?

Back

False, warm materials are less dense than cool materials.

Front

What is mantle convection?

Back

Mantle convection is the process by which heat from the Earth's interior causes the mantle to flow, driving the movement of tectonic plates.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact at their boundaries.

Front

What happens at divergent plate boundaries?

Back

At divergent plate boundaries, tectonic plates move apart, leading to the formation of new crust, often seen at mid-ocean ridges.

Front

What is a convergent plate boundary?

Back

A convergent plate boundary is where two tectonic plates collide, which can result in mountain formation, earthquakes, or volcanic activity.

Front

What is the significance of the mid-ocean ridge?

Back

The mid-ocean ridge is a divergent boundary where new oceanic crust is formed as magma rises from the mantle.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate is forced under another, often leading to volcanic activity.