Question

Sometimes it's hard to tell if the bowl-shaped feature at the top of a volcano is a crater or a caldera. You can usually determine if it's one or the other by _____.

a. learning its size and how it formed
b . learning how much water it is filled with
c. learning what type of volcano it's on top of
d. learning if the volcano is active or extinct

Answer 1

A caldera viscous or acidic lava plugs the vent of a volcano this leads to violent eruptions this causes the crater to be blown off the top of the volcano subsides or collapes forming a basin shaped depression.called a caldera .hope this helps

Answer 2

i think it is D. hope this helps :]