ECE Learning Set 3 Review

_________________ are seismic waves that move both up and down and side to side.

• P waves
• S waves
• Surface waves
• faults

Magnitude tells geologists...

• how much energy was released
• a number that geologists assign based on an earthquakes size
• how much damage occurred
• all of the options

Geologists use _____________________ to locate an earthquakes epicinter.

• Surface Waves
• seismic waves
• focus
• the Mercalli scale

Scientists need data from at least ___ seismographs to find and earthquake's epicenter.

• 5
• 2
• 4
• 3

Scientists need data from at least ___ seismographs to find and earthquake's epicenter.

• 5
• 2
• 4
• 3

The point on the surface directly above the focus is called the _________________.

• epicenter
• seismograph
• home
• fault

Which body wave compresses and stretches rock materials as it passes through the Earth's interior?

• Body Waves
• P- Waves
• S- Waves
• Surface Waves

Which body waves cause particles of rock material to move at right angles to the direction in which the waves are traveling?

• Body Waves
• P- Waves
• S- Waves
• Surface Waves

What is the name of the instrument that measures movements in the ground during an earthquake and creates electric signals that can be read to determine an earthquake's magnitude?

• Seismometer
• Seismic Station
• Seismogram
• Seismograph

What is the measure of the amount of energy released in an earthquake?

• Intensity
• Epicenter
• Magnitude
• Seismogram