g e n c e D i v e r

View from above View from side

Hot Magma

Spreading can also be seen in “real time” with GPS satellites.

What’s here?

The cross section below represents two crustal plates and the boundary between them. The arrows indicate the direction of rock movement. Which geologic events occur most often at this mid-oceanic ridge plate boundary? 1 magnetic pole reversals and cooling of ocean water 2 meteorite impacts and tilting of shorelines 3 hydrospheric pollution and adiabatic heating 4 earthquakes and volcanic eruptions

The cross section below represents two crustal plates and the boundary between them. The arrows indicate the direction of rock movement. The mid-oceanic ridge portion of this cross section best represents 1 convergence of the Nazca Plate and the South American Plate 2 divergence of the African Plate and the South American Plate 3 subduction of the Philippine Plate by the Eurasian Plate 4 transform faulting between the Pacific Plate and the North American Plate