As rivers carry sediment to the ocean, they can create triangular plains called
a. plateaus
b. deltas
c. gulfs
d. hills

Volcanic irruption is most likely to be violent when a) volcanoes near to the sea b) the neck of the volcano is sealed by a plug c) the lava is viscous d) the lava reaches the surface through a fissure e) the volcano is on the ocean floor

Choose the item that is an example of the geographic theme of place.

All of the following are extrusive landforms except           a. batholiths.   b. lava plateaus.   c. shield volcanoes.   d. geysers.