Continental Drift
What is the name of the most recent supercontinent?
Pangaea
Name a location where we can see seafloor spreading on land.
What are the 3 types of plate boundaries?
Convergent, Divergent, Transform
Oceanic plates are made of what kind of rock?
Igneous Rock
True/False Continental drift was widely accepted when it was first proposed.
False
What are the undersea mountain ranges called at the site of seafloor spreading?
Mid-ocean ridges
The Himalayas are an example of what type of boundary?
Convergent
Which layer of earth do convection currents occur in?
Mantle
What is the first and last name of the scientist who proposed continental drift?
Alfred Wegener
When 2 oceanic plates move apart, this motion is referred to as?
divergence
What do scientists use to determine how far tectonic plates move?
GPS
The technique scientists use to determine the age of rocks is called?
Absolute Dating
Wegener based his idea of continental drift on the study of what?
Coastlines
When an oceanic plate goes under a continental plate, this is called?
Subduction
The circulation of material caused by differences in temperature and density is called?
Convection
The outermost layer of earth that makes up the tectonic plates is called? (be specific)
lithosphere
What are the 3 pieces of evidence to support continental drift?
Fossil Evidence, Rock Evidence, Mountain Evidence
What is one piece of evidence to support seafloor spreading?
Possible answers: Mid-ocean ridges are made of igneous rock, Rock at mid-ocean ridges is younger than rock around it, Water at mid-ocean ridges is warmer than surrounding water, polarity on rocks around mid-ocean ridges
What are the 3 forces that cause plate motion?
Basal Drag, Ridge Push, Slab Pull
When an oceanic plate sinks under a continental plate, what process of the rock cycle does it experience?
Melting