FlashDash ← Public Lessons
Science 11-1 (Plate Tectonics)
Q
What is the lithosphere?
A
Earth's outer rigid layer, divided into tectonic plates.
Q
What do tectonic plates move over?
A
The mantle's more deformable rock.
Q
How quickly do tectonic plates move?
A
Very slowly, generally a few centimeters per year.
Q
What are the three types of plate boundaries?
A
Divergent, convergent, and transform.
Q
What happens at a divergent boundary?
A
Plates move apart.
Q
What landforms develop at divergent boundaries?
A
Mid-ocean ridges, rift valleys, and new oceanic crust.
Q
What happens at a convergent boundary?
A
Plates move toward each other.
Q
What can form at convergent boundaries?
A
Mountain ranges, trenches, and volcanoes.
Q
What happens at a transform boundary?
A
Plates slide horizontally past each other.
Q
What commonly happens at transform boundaries?
A
Faults and earthquakes.
Q
What is subduction?
A
When one tectonic plate moves beneath another at a convergent boundary.
Q
Which plate boundary is associated with seafloor spreading?
A
Divergent.
Q
Which plate boundary commonly builds mountains?
A
Convergent.
Q
Which plate boundary commonly produces earthquakes from sliding plates?
A
Transform.