plate tectonics
published “Origins of the Continents and Oceans”
A. Wegner
What are the 3 types of rocks?
igneous, metamorphic, and sedimentary
Western part of north and south America’s, along with the eastern side of Asia and Australia which have a large amount of volcanoes.
Ring of Fire
When plates finally move it causes and earthquakes, true or false?
True
a huge land mass composed of earlier forms of today’s continents
Pangea
they are located beneath the ocean and are denser than continental ones
Ocean/Oceanic Plates
What are the two types of igneous rocks?
intrusive and extrusive
What is melted rock inside the volcano called?
Magma
thick lithospheric plates that are made of andesite and granite that are less dense than oceanic plates.
Continental Plates
who mapped mountain ranges underwater to reveal what are called mid- ocean ridges
Harry Hess
a process that involves a lithospheric plate sinking into the mantle
Subduction
What is weathering of rocks through wind or water called?
Errosion
Melted rock outside of the volcano is called
Lava
a lithospheric plate boundary where two plates come together
Convergent Boundry
What two things are needed to change one rock into a metamorphic rock?
Heat and Pressure
heated lower mantle rock that rises towards the lithosphere because it is less dense
Mantel Plume
Sedimentary rock go through 2 processes what are they?
Compaction and Cementation
True or False Volcanoes only happen in convergent and divergent boundaries
True
What 2 things make sedimentary rock?
Weathering and errosion
the idea the continents move on the Earth’s surface
Continental Drift
a theory explaining how pieces of the Earth’s surface (plates) move.
Plate Tectonics
Which type of rock contains fossils?
Sedimentary
What are some the causes for Pangea breaking up into 7 Continents ?
Volcanos, Floods, and Meteors