2-2 EARTHQUAKES AND SEISMIC WAVES TEST

Front

WHAT ARE P WAVES?

Back

P waves (Primary waves) are the fastest seismic waves that travel through the Earth. They are compressional waves that can move through solids, liquids, and gases.

Front

WHAT ARE S WAVES?

Back

S waves (Secondary waves) are seismic waves that follow P waves. They are shear waves that can only travel through solids and are slower than P waves.

Front

WHAT ARE SURFACE WAVES?

Back

Surface waves are seismic waves that travel along the Earth's surface. They are slower than both P and S waves and can cause the most damage during an earthquake.

Front

WHAT IS AN EPICENTER?

Back

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

Front

WHAT IS THE FOCUS OF AN EARTHQUAKE?

Back

The focus is the actual location within the Earth where an earthquake starts.

Front

HOW DO P WAVES AND S WAVES DIFFER IN TRAVEL TIME?

Back

P waves travel faster than S waves. The difference in travel time can help determine the distance to the earthquake's epicenter.

Front

WHAT IS THE TRAVEL TIME OF P WAVES OVER 2000 KM?

Back

It takes approximately 4 minutes for P waves to travel 2000 km.

Front

WHAT IS THE TRAVEL DISTANCE OF S WAVES IN 12 MINUTES?

Back

S waves can travel approximately 4000 km in 12 minutes.

Front

HOW DO YOU CALCULATE THE DIFFERENCE IN TIME BETWEEN P WAVES AND S WAVES?

Back

To find the difference in time, subtract the travel time of P waves from the travel time of S waves.

Front

WHAT IS THE TIME DIFFERENCE FOR S WAVES AND P WAVES TRAVELING 2000 KM?

Back

The time difference is 3 minutes.