(1) Plate Tectonic Theory Flashcards
It is the solid part of the Earth.
Lithosphere
Give the 3 major layers of earth.
- Crust (outermost layer)
- Mantle (middle layer)
- core (innermost layer)
This theory states that the Earth’s crust is composed of several broken plates that continuously move either away, past, or towards each other
Plate Tectonic Theory
He is an Austrian climatologist, who first noted the theory on the movement of the Earth’s landmasses.
Alfred Wegener
This theory states that the Earth was once composed of only one supercontinent called Pangaea.
Continental Drift Theory
This theory states that the seafloor is continuously spreading and the extra crust gets recycled into the mantle. This theory is proposed by Harry Hess.
Seafloor Spreading Theory
This is where two plates meet.
Tectonic Boundary
This is when plates are moving towards each other.
Convergent Theory
This is when plates are moving away from each other.
Divergent Boundary
This is when plates are sliding sideways past each other.
Transform Boundary
The most known tectonic boundaries consist of many active volcanoes and where frequent earthquakes.
Pacific Ring of Fire
Give the 6 boundaries of the “Ring”.
Pacific Plate, Philippine Plate, Eurasian Plate, Juan de Fuca, Cocos Plates, Nazca Plate