Chapter 1: Plate Tectonics

The crust and the top part of the mantle together form this layer

Crust found under all continents and major islands. Thickest type of crust.

A ball of hot solid metal. Layer remains a solid despite intense heat & pressure.

Earth's thickest layer. Top cool enough to be rock, bottom moves like paste.

In the asthenosphere, hot molter rock rises and cooler rocks sink causes currents of motion.

Boundary formed where two plates push together. This causes the plates to collide.

Huge underwater mountain ranges where new Earth is brought to the surface of the ocean floor.

Boundary formed where two plates move apart. Seafloor spreading is an example of this boundary

A zone or boundary where two tectonic plates collide & one plate sinks beneath the other.

Earth's thinnest layer. 2 types of continental & oceanic. Home to ALL life on Earth.

Greek meaning "all lands". The name given to the super-continent proposed by Wegener!

A layer of weak, soft, & hot rock in the upper mantle. Convection currents slowly move rocks.

The lithosphere is broken into large plates. These plates fit together like jig-saw puzzle.

Type of subduction zone where two oceanic plates collide into each other.

Place on the crust where a plume of hot magma has melted through and reached the surface.

Type of subduction zone where two continental plates push together.

Theory by R. Wegener that said the crust was made of large pieces of land that drifted apart.

Boundary formed where two plates scrape past each other.

German scientist who, in the 1800's purposed the hypothesis of Continental Drift.

A deep valley that forms at the bottom of a divergent boundary. Found on land and under water.

When Earth's magnetic field switches from time to time and creates bands along mid-ocean ridge.

Theory that says Earth's crust is made up of huge plates that move over the surface of Earth.

Type of subduction zone where two different types of tectonic plates collide.

A layer of liquid metals that surround the inner core.

Crust found on all ocean floors, thinnest type of crust.