ES3: Flashcard #2 Review

Front

What is the relationship between a fault and the rock it cuts through?

Back

A fault is younger than the existing rock it cuts through.

Front

Why does oceanic crust sink under continental crust at a convergent boundary?

Back

Oceanic crust is thinner and more dense than continental crust.

Front

What type of plate boundary is characterized by the collision of tectonic plates?

Back

Convergent boundary.

Front

What is the soft layer beneath tectonic plates that allows them to move?

Back

Asthenosphere.

Front

What causes earthquakes at transform boundaries?

Back

When two tectonic plates slide past each other, they can get caught, causing pressure to build up, which is then released as an earthquake.

Front

Define a fault in geological terms.

Back

A fault is a fracture or zone of fractures between two blocks of rock.

Front

What are the three main types of plate boundaries?

Back

Divergent, Convergent, and Transform boundaries.

Front

What happens at a divergent boundary?

Back

At a divergent boundary, tectonic plates move away from each other, leading to the formation of new crust.

Front

What is the significance of the asthenosphere in plate tectonics?

Back

The asthenosphere is a semi-fluid layer that allows tectonic plates to move and shift.

Front

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

Back

Oceanic crust is denser than continental crust.