is the science that analyzes the cause of earthquakes and the propagation of waves within Earth and on its surface.

While researching a topic, a student has taken thefollowing notes:• Earthquakes start at a point called a “focus” andspread out from there as seismic waves.• The two types of seismic waves that travel beneathEarth’s surface are primary waves (P waves) andsecondary waves (S waves).• P waves travel more quickly beneath Earth’ssurface than do S waves.• P waves compress and expand the ground, causingit to move backward and forward.• S waves cause the ground to move from sideto side.The student wants to emphasize a similarity betweenP waves and S waves. Which choice most effectivelyuses relevant information from the notes toaccomplish this goal?A) P waves and S waves both travel beneath Earth’ssurface, causing the ground to move.B) P waves travel away from an earthquake’sstarting point at a higher rate of speed than doS waves.C) Spreading out from the focus of an earthquake,P waves move the ground backward andforward.D) Although P waves and S waves start at the samepoint, they behave very differently.

What cause earthquakes?

What do earthquakes tell scientists about the history of the planet?

Three seismometers are spread around the Earth. After an earthquake, what might scientists use these to locate?Athe seismic wavesBthe focusCthe faultDthe epicenter

.The shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves.*1 pointSeismologistRadarEarthquakeEarth's crust