Regents Earth Science - Plate Tectonics and The Interior

Front

What is the theory of plate tectonics?

Back

The theory of plate tectonics explains that the Earth's outer shell (lithosphere) is divided into several plates that glide over the semi-fluid asthenosphere beneath. This movement causes geological phenomena such as earthquakes, volcanic activity, and the formation of mountains.

Front

What geological features are formed when continental crust converges with oceanic crust?

Back

A deep ocean trench and a continental volcanic mountain range near the coast are formed when continental crust converges with oceanic crust.

Front

How does the density of continental crust compare to oceanic crust?

Back

Continental crust is thicker and less dense than oceanic crust, which is thinner and more dense.

Front

What is the lithosphere?

Back

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

Front

What is the epicenter of an earthquake?

Back

The epicenter is the point on the Earth's surface directly above where an earthquake occurs.

Front

What happens at a convergent plate boundary?

Back

At a convergent plate boundary, two tectonic plates collide, leading to the formation of mountains, deep ocean trenches, and volcanic activity.

Front

What is a transform plate boundary?

Back

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

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner, denser, and primarily composed of basalt, while continental crust is thicker, less dense, and primarily composed of granite.

Front

What is subduction?

Back

Subduction is the process where one tectonic plate moves under another and sinks into the mantle, often creating deep ocean trenches and volcanic arcs.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with each other, causing geological activity.