Boundaries
A plate boundary where two plates move toward each other and one can subduct underneath the other.
What is convergent boundary?
The crust and the uppermost part of the mantle that together make up plates.
What is the lithosphere?
The hypothesis that suggests continents are in constant motion on the surface of Earth.
What is continental drift?
Mountains form at this specific type of boundary.
What is convergent boundaries without subduction?
A plate boundary where two plates pull away from each other.
What is a divergent boundary?
The layer of Earth below the lithosphere that is partially melted, hot, and lets the plates move.
What is the asthenosphere?
Volcanoes form at this specific type of plate boundary.
What is convergent boundaries without subduction?
A plate boundary where two plates slide past each other.
What is a transform boundary?
The state of Earth in which magnetized objects, like compass needles, will orient themselves to point North.
What is normal polarity?
A supercontinent that existed when all of the continents were connected.
What is Pangea?
Mountain ranges in the middle of the ocean.
What is mid ocean ridges?
A boundary where mid ocean ridges are formed.
What is a divergent boundary?
This evidence is still visible on Earth's surface and suggests that the continents must have been connected at one point in the past.
What is... the continents fit together like puzzle pieces.
The circulation of materials caused by different temperatures and densities is what causes plates to move.
What is convection?
This tectonic plate process causes a deep ocean trench.
What is subduction?
When a denser plate sinks below a more buoyant one.
What is subduction?
Overtime Earth's magnetic field will experience this again.
What is changing polarity?
The name of the man who developed the theory of continental drift.
The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
What is seafloor spreading?