How do craters differ from calderas? 1)Calderas, which have diameters of 1 km or

Question

How do craters differ from calderas?

1)Calderas, which have diameters of 1 km or more, are much larger than craters.

2)Calderas are always composed of felsic material, whereas craters are always composed of mafic material.

3)Calderas only form as results of the summits of volcanoes collapsing, whereas craters only form as the results of explosive eruptions.

4)Calderas are always composed of mafic material, whereas craters are always composed of felsic material.

5)Calderas are much smaller than craters, which have diameters of 1 km or more.

Explanation / Answer

A caldera is formed during volcanic activity when a large magma eruption leaves behind a huge vacuum underground. Volcanic materials above this chamber collapses inside leaving a huge depression at the top.

Thus option A is correct.

Calderas, which have diameters of 1 km or more, are much larger than craters.

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