7G Science HW#15: Chapter 5.2 to 5.4

The point beneath Earth’s surface where rock breaks under stress and causes an earthquake is called ______.

• Focus

• Epicenter

• Seismic Waves

• P waves

The point on Earth’s surface directly above an earthquake’s focus is called ______.

• Focus

• Epicenter

• Seismic Waves

• P waves

A vibration that travels through Earth carrying the energy released during an earthquake is called ______.

• Focus

• Epicenter

• Seismic Waves

• Fault

A type of seismic wave that compresses and expands the ground is called ______.

• Surface waves

• S waves

• Seismic Waves

• P waves

A type of seismic wave that moves the ground up and down or side to side is called ______.

• Surface waves

• S waves

• Seismic Waves

• P waves

A type of seismic wave that forms when P waves and S waves reach Earth’s surface is called ______.

• Surface waves

• S waves

• Seismic Waves

• P waves

A device that records ground movements caused by seismic waves as they move through Earth is called _____.

• Seismograph

• Magnitude

• Mercalli scale

• Richter scale

The measurement of an earthquake’s strength based on seismic waves and movement along faults is called _____.

• Seismograph

• Magnitude

• Mercalli scale

• Richter scale

A scale that rates earthquakes according to their intensity and how much damage they cause is called _____.

• Seismograph

• Moment magnitude scale

• Mercalli scale

• Richter scale

A scale that rates seismic waves as measured by a mechanical seismograph is called _____.

• Seismograph

• Moment magnitude scale

• Mercalli scale

• Richter scale