Continental Drift and Plate Tectonics

Front

What hypothesis states that the continents were once joined to form a single supercontinent?

Back

Continental Drift

Front

Which layer of the Earth is completely liquid?

Back

Outer Core

Front

When an oceanic plate and a continental plate collide, which one will subduct or sink below the other?

Back

Oceanic Plate

Front

What two elements make up the Earth's core?

Back

Iron and Nickel

Front

Which layer is made of the crust and upper mantle?

Back

Lithosphere

Front

What is the theory that explains the movement of the Earth's plates?

Back

Plate Tectonics

Front

What is the process called when new oceanic crust is formed at mid-ocean ridges?

Back

Seafloor Spreading

Front

What is the name of the semi-fluid layer beneath the lithosphere?

Back

Asthenosphere

Front

What type of boundary occurs when two tectonic plates slide past each other?

Back

Transform Boundary

Front

What is the name of the supercontinent that existed about 300 million years ago?

Back

Pangaea