Plate Tectonic Review

Alfred Wegener 's "Continental Drift" proposed that Earth's continents

• had once been joined as 3 separate land masses

• had once been joined as a single land mass

• had never been joined

• had always been located at their current locatins

Place where tectonic plates interact

• Plate boundaries

• Plate centers

Process in which one tectonic plate is forced beneath another

• Transform Boundary

• Mid- Ocean Ridge

• Rift Valley

• Subduction

Paleomagnetism is the study

• of the age of the rocks on the ocean floor

• of the history of Earth's magnetic field

• of seafloor spreading

• of the mid-ocean ridge

Place where two tectonic plates slide horizontally past each other

• Convergent Plate Boundary

• Divergent Plate Boundary

• Transform Plate Boundary

• Created the Himalayan Mountains

Type of boundary that pushes continental crust upward to form folded mountains.

• Transform

• Divergent

• Convergent: Oceanic to Continental

• Convergent: Continental to Continental

Uses sound wave to determine ocean depth

• Magnetometer

• hydrophones

• Submarine

• Sonar

Alfred Wegener named his super continent

• Eurasia

• Pangaea

• Laurasia

• Wegener Land

Type tectonic plate boundary that produces deep ocean trenches and volcanic mountain chains

• Convergent: Continental to Continental

• Convergent: Oceanic to Oceanic

• Convergent: Oceanic to Continental

• Divergent: Ocean to Ocean

Rock samples near ocean trenches are

• older than those taken from continental crust

• older than those taken near ocean ridges

• younger than those taken near ocean ridges

• are the same age as those taken near ocean ridges