Unit 4 Chapter 3: Measuring Earthquake Magnitude
S-waves can easily travel through liquids.
False
Which of the following waves propagate from the focus during an earthquake?
Seismic
Seismograms contain information that can be used to determine
All of the above
A seismograph from an earthquake with an epicenter about 200 miles away shows
A large arrival for the first P-waves, then a falling off, then a large arrival for the first S-waves
What does a seismograph record?
The ground movements caused by seismic waves
A seismogram is the printed record of seismic activity.
True
A seismograph is used to measure an earthquake's intensity.
True
A seismometer is a digital seismic wave recorder.
True
Modern seismometers record ground motions using electronic motion detectors.
True
A printed record of seismic activity produced by a seismometer is called a seismograph.
False
A seismograph produces a graph-like representation of the radio waves released in an earthquake.
False
A seismogram is the paper record upon which the seismic waves are recorded in a seismograph.
Seismogram
S-waves do not travel through liquids. What instrument with P-waves but no S-waves indicates that the earthquake occurred on the other side of Earth because the S-waves didn't travel through the liquid outer core?
Seismogram
An older machine that detects seismic waves is known as a ____.
Seismograph
The intensity of an earthquake is measured by a _____.
Seismograph
An older type of seismometer in which a suspended, weighted pen wrote on a drum that moved with the ground is known as:
Seismographs