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Chapter 7 E. Science
Question | Answer |
---|---|
Wenger thought that all the continents were once together in one large continent called | Pangea |
New oceanic lithosphere forms as a result of | sea-floor spreading |
Evidence for sea- floor spreading has come from | magnetic minerals |
hypothesis that states that the continents were once one large mass that broke apart | continental drift |
process that takes place at mid-ocean ridges | sea-floor spreading |
part of molten rock at mid-ocean ridges | magnetic minerals |
items that provide evidence that the continents were once closer together | fossils |
tectonic plates consist of | both continental and oceanic crust |
the deep interior of the Earth can be mapped using | seismic waves |
the layer of rock that comprises 67% of Earth's mass | mantle |
the layer of Earth made mostly of iron | core |
the thin, solid outermost layer above the mantle | crust |
the rigid layer made up of crust and upper mantle | lithosphere |
the layer made of solid rock that slowly flows | asthenosphere |
the lower part of the mantle | mesosphere |
the global positioning system can map the rate of tectonic plate movement using | radio waves |
a possible result of plates moving along a transform boundary is | earthquakes |
where two plates collide | convergent boundary |
where two plates are moving away from each other | divergent boundary |
where two plates are moving horizontally past each other | transform boundary |
process of moving layers of rock by heating and cooling | convection |
where denser oceanic lithosphere sinks beneath continental lithosphere | slab pull |
where oceanic lithosphere slides downhill due to gravity | ridge push |
stress at a divergent plate boundary | tension |
stress at a convergent plate boundary | compression |
upward -arching rock layer | anticline |
downward-arching rock layer | syncline |
hanging wall moves down relative to footwall | normal fault |
hanging wall moves up relative to footwall | reverse fault |
sinking of rock layers | subsidence |
rising of rock layers | uplift |