Plate Boundaries
What are the three plate boudaries?
Convergent, divergent, and transform
This scientist proposed the idea of continental drift?
Alfred Wegener
This type of landform forms when two continental plates have a convergent boundary?
Mountains
This process in the mantle causes hot material to rise and cool material to sink, helping move tectonic plates.
Convection Currents
This type of crust is thinner but denser...
Oceanic Crust
What type of plate boundary occurs when two tectonic plates move away from each other?
Divergent Boundary
This supercontinent existed millions of years ago and broke apart.
Pangaea
Two plates pull apart from each other and new crust comes up and is cooled.
This is the technical name for the rigid outer layer of Earth that is broken into tectonic plates.
Lithosphere
Oceanic Rock is typically made out of this kind of rock.
Basalt
This famous fault line in California is an example of a transform boundary.
The San Andreas
There are two types of Earth's Crust...
Continental and Oceanic
True or false: Hot spots are at the edges of oceanic crusts converging.
False
Denser oceanic plates tend to do this compared to continental plates.
Subduct
Continental Crust is typically made out of this type of rock.
Granite
When an oceanic plate sinks beneath a continental plate, this process occurs.
Subduction
This layer beneath the lithosphere is soft and slowly flows. (be more specific than mantle)
The asthenosphere
The Mariana Trench formed at this type of plate boundary
Convergent Boundary
The unit we use to rate how much plates move each year is...
Centimeters
True
This type of boundary is responsible for creating mid-ocean ridges and new ocean crust.
Divergent
Oceanic crust is generally this compared to continental crust.
Denser
What makes divergent boundaries constructive?
The fact that new crust/lithosphere is created.
Where is the Ring of Fire?
Pacific Ocean
What is the Plate Tectonic Theory?
Earth’s outer shell (the lithosphere) is broken into large pieces called tectonic plates, and these plates are constantly moving very slowly on top of the semi-fluid asthenosphere or by convection currents within the mantle.