Earthquakes!

Front

What is the minimum number of seismograph stations needed to locate an earthquake epicenter?

Back

3 seismograph stations are needed to accurately locate an earthquake epicenter.

Front

Many earthquakes happen along the borders of...

Back

Tectonic Plates. Earthquakes frequently occur at the boundaries where tectonic plates meet.

Front

What are the first waves to arrive in an earthquake?

Back

P waves (Primary waves) are the first seismic waves to arrive during an earthquake.

Front

Earthquakes under the water can cause _________________________________

Back

tsunamis. Underwater earthquakes can displace water and generate tsunamis.

Front

Which city is closest to the epicenter?

Back

City B is the closest to the earthquake epicenter.

Front

What are P waves?

Back

P waves, or Primary waves, are compressional waves that travel fastest through the Earth.

Front

What are S waves?

Back

S waves, or Secondary waves, are shear waves that arrive after P waves and can only travel through solids.

Front

What are surface waves?

Back

Surface waves are seismic waves that travel along the Earth's surface and cause the most damage during an earthquake.

Front

What is an earthquake epicenter?

Back

The epicenter is the point on the Earth's surface directly above where an earthquake originates.

Front

What is the Richter scale?

Back

The Richter scale is a logarithmic scale used to measure the magnitude of an earthquake.