P.2 Review

Front

Where are the oldest rocks on the seafloor located?

Back

The oldest rocks on the seafloor are located farthest from the mid-ocean ridge.

Front

What are the two types of Earth's crust?

Back

The two types of Earth's crust are oceanic and continental.

Front

What type of rock is primarily found in the continental crust?

Back

Granite is primarily found in the continental crust.

Front

What is the outer layer of the Earth called?

Back

The outer layer of the Earth is called the crust.

Front

What is the mid-ocean ridge?

Back

The mid-ocean ridge is an underwater mountain range formed by plate tectonics.

Front

What is the difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser than continental crust, which is thicker and less dense.

Front

What type of rock is primarily found in the oceanic crust?

Back

Basalt is primarily found in the oceanic crust.

Front

What is the lithosphere?

Back

The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the asthenosphere?

Back

The asthenosphere is the semi-fluid layer beneath the lithosphere that allows tectonic plates to move.

Front

What is plate tectonics?

Back

Plate tectonics is the theory that explains the movement of the Earth's plates and the associated geological activity.