Continental Drift and Plate Tectonics Review

Front

What is a convergent boundary?

Back

A convergent boundary is a type of plate boundary where two tectonic plates move toward each other, often resulting in one plate being forced beneath the other, leading to mountain formation, earthquakes, and volcanic activity.

Front

What is the asthenosphere?

Back

The asthenosphere is a semi-fluid layer of the Earth's mantle located beneath the lithosphere, from which lava erupts during volcanic activity.

Front

What is convection in the context of plate tectonics?

Back

Convection is the process by which heat from the Earth's interior causes the mantle to flow, creating currents that drive the movement of tectonic plates.

Front

What evidence do glacier scars provide about Africa's past climate?

Back

Glacier scars found in Africa indicate that the continent was once located in a region with a very cold climate, suggesting significant movement of the continents over geological time.

Front

What is a transform boundary?

Back

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

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 sea floor spreading?

Back

Sea floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges as tectonic plates move apart.

Front

What are tectonic plates?

Back

Tectonic plates are large sections of the Earth's lithosphere that move and interact with one another, causing geological phenomena such as earthquakes, volcanic eruptions, and mountain building.

Front

What is the role of the outer core in plate tectonics?

Back

The outer core is a liquid layer of the Earth that generates the magnetic field, but it does not directly influence plate tectonics.

Front

What is the difference between magma and lava?

Back

Magma is molten rock found beneath the Earth's surface, while lava is magma that has erupted onto the Earth's surface.