ES. 7abc Plate Tectonics Unit Review 01

Front

What is a subduction zone?

Back

A subduction zone is a type of convergent plate boundary where one tectonic plate is forced under another, leading to geological activity such as earthquakes and volcanic eruptions.

Front

What type of plate boundary occurs when two plates move apart?

Back

A divergent boundary occurs when two tectonic plates move away from each other, often resulting in the formation of new oceanic crust.

Front

What evidence supports the theory of continental drift?

Back

Fossil evidence, such as the discovery of Mesosaurus fossils in both Africa and South America, supports the theory that these continents were once connected.

Front

Define a convergent boundary.

Back

A convergent boundary is where two tectonic plates collide, which can result in subduction or mountain formation.

Front

What is a transform boundary?

Back

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

Front

What is seafloor spreading?

Back

Seafloor spreading is the process by which new oceanic crust is created at mid-ocean ridges as tectonic plates pull apart.

Front

What is the significance of magnetic reversal in geology?

Back

Magnetic reversal refers to changes in Earth's magnetic field, which are recorded in rocks on either side of mid-ocean ridges, providing evidence for seafloor spreading.

Front

What happens at a divergent boundary?

Back

At a divergent boundary, tectonic plates move apart, leading to the formation of new crust and often resulting in volcanic activity.

Front

What is the role of tectonic plates in earthquakes?

Back

Tectonic plates can cause earthquakes when they interact at their boundaries, either colliding, sliding past each other, or pulling apart.

Front

Explain the concept of plate tectonics.

Back

Plate tectonics is the scientific theory that describes the large-scale movement of Earth's lithosphere, which is divided into tectonic plates.