Earthquake Test

Front

What is the Continental Crust?

Back

The outer layer of the Earth that is thicker and less dense than the oceanic crust.

Front

What is the Oceanic Crust?

Back

The outer layer of the Earth that is thinner and more dense than the continental crust.

Front

What is a Seismograph?

Back

A device that measures and records the motion of the ground during an earthquake.

Front

What is the Focus of an earthquake?

Back

The point within the Earth where an earthquake originates.

Front

What is the Epicenter of an earthquake?

Back

The point on the Earth's surface directly above the focus of an earthquake.

Front

What are P-waves?

Back

Primary waves that are compressional and move in a push/pull motion.

Front

What are S-waves?

Back

Secondary waves that are shear waves and move the ground up and down.

Front

What is a Fault?

Back

A fracture in the Earth's crust where blocks of land have moved relative to each other.

Front

What is a Transform Boundary?

Back

A tectonic plate boundary where two plates slide past each other without creating new crust.

Front

What is a Convergent Boundary?

Back

A tectonic plate boundary where two plates collide, often creating mountains or causing subduction.