Make a long story short
The name of the ancient super-continent formed 250 million years ago.
What is Pangaea?
The movement of heated material due to differences in density (heated material rises, cools, sinks).
What are convection currents?
What we know about the layers of the Earth come our study of these.
What are seismic waves of earthquakes?
The tectonic plates float/flow on this layer.
What is the asthenosphere?
A Divergent Boundary Occurs when plates...
What is when plates pull apart?
The theory that explains that continents were once part of a supercontinent, then drifted to current locations.
What is continental drift?
Fold mountains are created at this type of boundary.
What is a continental to continental convergent boundary?
The natural event that occurs most often at a transform boundary as it violently slips.
What are earthquakes?
The Great Rift Valley is breaking off Africa's continent; it is caused by this type of boundary.
What is a divergent boundary?
This is the process that causes earth's tectonic plates to move.
What are convection currents in the mantle?
Coastal fit of continents, fossils, geologic and climate evidences.
What was the evidence of Continental Drift Theory?
The youngest rocks on the seafloor are most likely found here.
What is a mid-ocean ridge?
If an earthquake occurs on the ocean floor, this event may be created.
What is a tsunami?
At the Atlantic Mid-Ocean Ridge, this is being created, making the region grow, while the region in the Pacific shrinks.
What is new crust?
This occurs when two plates collide and the denser one is forced under back into the mantle.
What is subduction?
4.6 billion years.
What is the approximate age of the Earth? (Really old.)
Earth's mantle is heated by energy generated by this layer.
What is the core of the Earth?
Transform boundaries have earthquakes, but do NOT usually produce this.
What is magma or volcanoes?
These are usually created when two convergent plates collide.
What are volcanoes or volcano chains?
A zone of active volcanoes that encircles the Pacific Ocean is known as . . .
What is the Ring of Fire?
Most geologists at the time rejected Alfred Wegener's idea of continental drift because . . .
What is he couldn't explain HOW it happened?
The process of new crust being created by molten material in the ocean.
What is sea-floor spreading?
A break in Earth's crust where rocks have slipped past each other that may experience earthquakes.
What is a fault?
The three types of plate boundaries are . . .
What is convergent, divergent, and transform?
Earth's lithosphere is broken into huge, slabs of rock moving on the asthenosphere.
What is the Theory of Plate Tectonics?