Question 1
A seismograph works because there is a ________.
◦ rotating paper drum that causes mini-earthquakes
◦ liquid medium in the instrument allowing only P waves to pass through
◦ vertical ground motion causing the pen to move
◦ suspended weight that moves independently of Earth
Question 2
Look at the below diagram
What does the above diagram show as relating to locating an earthquake epicenter?
◦ This is an example of using triangulation to correctly pinpoint an epicenter.
◦ Only one of the three circle radius readings is needed. The other two are simply to check the location determined from the first.
◦ It is possible to determine the depth of the earthquake through the use of three epicenters.
◦ Three is not a sufficient number of seismic stations to locate an earthquake epicenter.
Rodents Show Empathy-Driven Behavior
Diagram of a typical fossil-fueled power plant
Bacteria Diagram
Human Ear diagram
Blank cell diagram
A Hertzsprung-Russell Diagram