Patterns of Earthquakes and Volcanoes Now let’s consider some other patterns on the Earth. 1. Volcanoes. Compare the maps that show the location of volcanoes on Mars and on Earth. Do you see any patterns in where volcanoes on Mars are located? Do you see any patterns in where volcanoes on Earth are located? 2. Earthquakes. We don’t have any data about earthquakes on Mars because we have never put any seismometers there. When astronauts went to the Moon, though, they left seismometers in several places on the Moon. So we have records of some earthquakes on the Moon. We can also infer that earthquakes occurred where we can recognize recent geologic faults (cracks where two blocks of rock slide past each other). Compare the maps of earthquakes on the Moon and earthquakes on the Earth. Do you see any patterns in where earthquakes on the Moon are located? Do you see any patterns in where earthquakes on Earth are located?