Plate Tectonics and Earth's Layers

Front

What are the three main layers of the Earth?

Back

The three main layers of the Earth are the crust, mantle, and core.

Front

What is the outermost layer of the Earth called?

Back

The outermost layer of the Earth is called the crust.

Front

What is the primary composition of the Earth's inner core?

Back

The inner core is primarily composed of iron and nickel.

Front

What type of boundary occurs when two tectonic plates move away from each other?

Back

Divergent boundary.

Front

What is a convergent boundary?

Back

A convergent boundary is where two tectonic plates move towards each other, often causing one plate to be forced beneath the other.

Front

What geological features are commonly formed at divergent boundaries?

Back

Mid-ocean ridges and rift valleys are commonly formed at divergent boundaries.

Front

What is the process of subduction?

Back

Subduction is the process where one tectonic plate is forced under another plate.

Front

What is the significance of the asthenosphere in plate tectonics?

Back

The asthenosphere is a semi-fluid layer of the mantle that allows tectonic plates to move.

Front

How do convection currents in the mantle affect plate tectonics?

Back

Convection currents in the mantle create movement that drives the tectonic plates.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser than continental crust.