1. an earthquake occurs and you record the following seismogram:
amplitude (cm)

7 30 40 50 60 70 80 90 100 110 120 , 130 140
time (s)
the s wave speed is 3.0 km/s, and the p wave speed is 5.0 km/s. how far away is
this earthquake? note the earthquake does not start at time = 0 s. (20 pts)

In 1915 the german geologist and meteorologist alfred wegener first proposed the theory of continental drift, which states that parts of the earth's crust slowly drift atop a liquid core. the fossil record supports and gives credibility to the theories of continental drift and plate tectonics.

What's the weather like where you live?

The point where two air masses meet is called a