Continental Drift
The the gradual movement of the Earth's continents over time
What is continental drift?
The outermost layer of the Earth
What is the crust? What is the lithosphere?
The meeting point of two tectonic plates
What is a boundary?
A crack in the Earths crust that allows for movement
What is a fault?
The origin of an earthquake
What is the focus?
Earth's seven continents used to comprise this supercontinent
What is pangaea?
The layer of the Earth that contains magma
What is the mantle?
Mountains ranges form at this type of boundary?
What is a convergent boundary?
What is a convergent boundary?
The seismic waves of an earthquake that cause the most destruction
What are L-waves? What are surface waves?
When people discuss continental drift, they bring forth evidence of the continents fitting together; this is the phrase that represents that
What is puzzle piece structure?
The hottest and most pressurized layer of the Earth
What is the core?
When a collision occurs between a piece of continental crust and a piece of oceanic crust, and the oceanic crust gets pulled underneath the continental crust.
What is a subduction zone?
When two tectonic plates seperate
What is a divergent boundary?
A chain of active volcanoes that sit in the Pacific Ocean
What is the Ring of Fire?
These are three pieces of evidence (other than the continents' puzzle piece structure) that support the theory of continental drift
The layer of the Earth that the crust (lithosphere) floats on
What is the asthenosphere?
The process by which new ocean floor is formed at Divergent Plate Boundaries
What is seafloor spreading?
When two cracked pieces of crust (or rocks) slide against each other
What is a strike-slip fault?
These types of volcanoes have explosive eruptions
What are cinder cone and composite volcanoes?
Alfred Wegener's four pieces of evidence support his theory of continental drift. Since the continents continue to drift, Earth's seven continents will eventually form this
What is a new supercontinent?
Convection currents, seafloor spreading, and plate tectonics are related in this way
What is they are all directly related?
The burning hot core causes the magma at the bottom of the mantle to heat up and rise, as it rises, it cools and sinks. This process splits tectonic plates apart and causes seafloor spreading and continental drift.
What are convection currents?
When two cracked pieces of crust (or rocks) are pushed together
What is a reverse fault?
Underwater transform boundaries and underwater strike-slip faults produce this type of natural disaster