Discoveries that Support Continental Drift
This is where you will find the new rock at a divergent boundary.
What is in the middle or on the boundary
These plate boundaries slide past each other and often produce earthquakes
What is transform plate boundaries
Convection is a process that occurs in which of earth's layers?
What is the asthenosphere
These waves are very fast and can travel through liquid and solids
What is p-waves
The process where molten rock from inside the Earth rises through the cracks in the ridges, cools and forms new oceanic crust.
What is sea-floor spreading
What about rock (plates) cause one to sink below another.
What is the density (how heavy the rock is)
These plate boundaries are located on the ocean floor, creating sea-floor spreading
What are divergent boundaries
The movement of the Earth's cores creates the Earths _______________________________.
What is magnetic field
This geological feature is formed when two continental plates meet at a convergent boundary
What are mountains
The movement of material due to differences in density.
What is convection
What two features form at convergent plate boundaries.
What are volcanoes and mountains.
This boundary results when 2 plates push into one another either causing the crust to be pushed up or causing one plate to sink beneath it.
What is a convergent boundary
Tectonic plates are located on this layer.
What is the lithosphere
These waves can only travel through solids.
What are S-waves
The continents joined in a single landmass
What is Pangaea
When the denser (heavier) plate goes under another (subducts), the plate gets turned into ________________ in the mantle and rises back up.
What is magma.
This is the term when one tectonic plate moves under another plate
What is subduction
Nickel and iron are two substances that make up the Earth's _____________.
What is core.
This geological feature is formed when two continental plates meet at a divergent boundary.
What is a rift
The study of these are how we know Earth has an inner core and an outer core.
He is credited with the theory of continental drift
Who is Alfred Wegener
In the theory of plate tectonics, _____________________ is used to explain why the continents move a few centimeters per year.
What is sea-floor spreading
This is what makes seismic waves change speed and direction as they move through the different layers and densities of the Earth
What is refraction
These are the two geological features that are formed when oceanic and continental plates meet at a convergent boundary.
What are volcanoes and trenches
The three types of collisions happen at convergent boundaries.
What are continent-continent collisions, continent-ocean collisions and ocean-ocean collisions