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Plate Tectonics

Earthquakes waves are recorded by _____. seismographs
Ocean crust is usually subducted because it is _____ but more dense. thinner
Magma that reaches the surface of the earth is called _____. lava
A crack or split in the earth's crust where the plates have moved is called a _____. fault
The theory that states that the earth's continents were once all joined together as one large super continent is called the _____ _____ ______. Theory of Pangea
The Hawaiian Islands were formed by a _____ _____ located in the plate that allows magma to come up. hot spot
Most earthquakes occur at _____ _____. plate boundaries
The theory that says that the continents of the earth are moving on top of the earth's crust is known as the Theory of _____ _____. Continental Drift
The plate boundary which runs across _____ is a divergent boundary. Iceland
The predicted landforms or geologic events where the Pacific Plate is being sliding past the North American Plate are ______. earthquakes
An _____ can cause a tsunami or damage to roads and buildings. earthquake
The fossils of dinosaurs; the rock layers of continents; and the continents that look like pieces of a puzzle that fit together are all evidence that has been collected to support the Theory of _____. Pangea
The _____ Ocean is where the longest mountain range on earth can be found. Atlantic
The theory that states that the earth's crust is divided into plates is called _____ _____. Plate Tectonics
A circle of volcanoes around the Pacific Plate is called the _____ _____ _____. Ring of Fire
Continental crust colliding with continental crust is an example of a transform boundary like which can be found in the _____ or Mount Everest. Himalayan Mountains
The _____ _____ _____ is an example of two plates sliding side by side. San Andreas Fault
The Mid Atlantic Ridge is an example of oceanic crust ______ apart from oceanic crust, pulling
The ______ materials sink because they are denser than the surrounding area. cooler
The tectonic plates float on the _____, the semi-liquid layer of the earth. Asthenosphere
Mid-ocean ridges are places where tectonic plates are _____ apart. spreading
Continental crust is _____ than oceanic crust. thicker
Alfred _____ is the scientist who is credited with proposing the ideas that led to the development of plate tectonics theory. Wegner
Most earthquakes in California occur at a ______ boundary (earth's plates are sliding past each other) transform
Underwater _____ occur where plates move apart. ridges
New crust is formed along the mid- ______ ridges of the earth ocean
The _____ heats up the mantle. core
The _______ Mountains are an example of Oceanic Crust colliding with Continental Crust. Andes
The predicted landforms or geologic events where the Nazca Plate is being subducted under the South American Plate are ______. volcanoes
A _____ valley is NOT likely to happen at a divergent boundary consisting of oceanic crust and oceanic crust. rift
_____ are geologic events that can happen at transform boundaries. earthquakes
Tectonic plates are also know as the _____. lithosphere
The plates will most likely create an ______ ______ at a divergent plate boundary. ocean basin
A mountain _____ will most likely occur when two tectonic plates converge and move toward each other. range
The convergent/subduction boundary of the Nazca Plate and the South American Plate that has produced volcanic mountains and ocean _____ (Andes). trenches
When two tectonic plates pull away from each other, as in a divergent boundary, a _____ is most likely to occur. ridge
The ______ of tectonic plate boundaries is associated with earthquakes. interaction