CH 12

An area where no direct seismic waves from a particular earthquake can be detected is called ___.

• an inactive fault
• the mesosphere
• a shadow zone
• the atmosphere

What are the fastest body waves?

• P waves
• T waves
• S waves
• Q waves

To find the distance to an earthquake's epicenter, scientists ____.

• chart the lag time between preshocks and aftershocks
• use radio wave detection devices
• analyze the arrival times of the P waves and S waves
• analyze the arrival times of the Love waves and the Rayleigh waves

If you are in a car during an earthquake, you should ____.

• drive toward a bridge
• stop the car in a safe place
• get out and run
• park near a tall building

What happens to tsunamis as they move toward shore?

• They decrease in height.
• They die out.
• They turn into riptides.
• They increase in height.

Which method is NOT used to PREDICT earthquakes?

• detecting changes in rock
• monitoring natural gas seepage
• assessing building damage
• recording foreshocks

If you are indoors during an earthquake, you should ___.

• stand near a window
• stand on top of a desk
• crouch under a desk
• get outdoors fast

At what location does the first motion of an earthquake occur?

• the focus
• the seismic gap
• the mantle
• the epicenter

What is the epicenter of an earthquake?

• the location along a fault where the first motion of an earthquake occurs
• a seismic wave that travels along the surface of Earth
• the point on Earth's surface directly above the earthquake's focus
• the last place that motion in an earthquake is detected

Which of the following is NOT a type of surface wave?

• Love
• Compression
• Raleigh