across:
1.volcanoes that have a record of eruption within the last 600 years.
2.a natural opening in the surface of the earth.
3.volcanoes that have not erupted for the last 10,000 years.
4.an excessively explosive type of eruption of gas and pyroclastics.
5.formed by the accumulation of lava that oozes out from the volcano

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6.a periodic weak to violent eruption characterized by fountain lava.
7.formed from alternate solidification of lava and pyroclastic deposits.
8.molten rock formed when a magma hardens in crack of a volcano.
9.a flat piece of rock formed when a magma hardens in a crack of a volcano.
10.built from ejected lava fragmnets. it has a steep slope and a wider crater.​