Which of the following zones has the greatest seismic activity on Earth?
A) Circum-Pacific Belt
B) Alpine-Himalayan Belt
C) San Andreas Fault
D) Mid-Atlantic Ridge
Question 2
You are monitoring a seismograph in Seattle. One morning, your instrument records an earthquake approximately 2000 km away. From that information, can you determine where the earthquake occurred?
A) Yes, because seismographs can indicate direction as well as distance.
B) Yes. You could take the distance and match it up with known fault lines to find the epicenter.
C) No, because seismographs can't pick up earthquakes from that far away.
D) No, because you would need information from more than one seismograph to plot the epicenter.
Three zones of root growth.
Pacific Black Duck (Anas superciliosa)
Supermassive Black Holes as Engines for Galactic Activity
Earth’s Spheres
World Climate Zones
Similar Rock Outcrops on Mars and Earth