The point on the earth’s surface immediately above the focus is the seismic center.

A glacier covering at least 50,000 km2 and unconfined by topography is classified as a(n) ____.​

Thick bars of gravel and large boulders provide evidence for massive flooding cause by the failure of large pluvial and proglacial lakes.​

Both P-waves and S-waves can pass through ____. 

A ______ stress is caused by forces pulling away from one another. 

_____ meanders are meanders that retain their sinuous pattern as they cut vertically downward below the level at which they originally formed. 

Harry Hess proposed that the _______. 

A metamorphic rock is similar both in mineralogy and texture to its parent rock.

A(n) _________ is a contact in which an erosional surface on a pluton or metamorphic rock has been covered by sedimentary (or volcanic) rock. 

. _____ can occur when water-saturated soil turns from a solid to a liquid as a result of an earthquake.