Q1M2W2-EarthSci

• Our Earth has four layers consisting of different materials, namely, crust, mantle, inner, and outer core.
• According to the Plate Tectonics Theory, the entire lithosphere of the Earth is broken into numerous segments called plates
• Divergent Boundary is formed when two tectonic plates move apart from each other creating tension.
• Molten rocks called magma to rise from the Earth’s mantle to the surface.
• A divergent boundary is also known as a constructive boundary.
• The mid-ocean ridge is formed by the divergence between oceanic plates
• Continental rift valley is formed between continental plates.
• Convergent boundary is formed when two plates move toward each other.
• This boundary has three types: Oceanic-Continental plate boundary, Two Oceanic plate boundary, and Two Continental plate boundary.
• In Oceanic-Continental plate boundary and two oceanic plate boundary, the oceanic plate bends down into the mantle through the process called subduction.
• Since the oceanic plate is destroyed at the convergent boundary, this boundary is also called a destructive boundary
• With two continental plates converging, a tension zone is formed.
• Transform fault boundary is formed when two plates are sliding past each other.
• Transform fault boundaryis also called strike-slip fault
• A crack is then formed creating an undersea canyon or linear fault valley.