Vulkanisme 's terminologies:

1. Vulkanologi  : kebumian's knowledge that memplajari gunungapi
2. Magma  : silicate material moltens comprise of incandescence solid material,molten,and gas that exists at lithosphere coat earths. Magmas normal temperature bersikar              900 c 1200 C.
3. Erupsi  : its issue process magma of lithosphere coat gets to permukan earth. Erupsi one gunungapi dapdt as discharge (efusif) via crack on stone facings. And sumburan's explosion (ekaplosif) via crater or volcano funnel.
4. I ntrusi is magma  : magma squandering process via rocks streaked cracks, but doesn't get to earth surface. If intrusi magma ices therefore will form intrusiva's rock.
5. Lava  : secretory magama gets to earth surface.
6. Lava  : lava already gets dash with materials at surface bumu.
7. Eflata / is piroklastik's material  : untrammeled material from gunungapi while happens explosive eruptions. 
8. Crater  : hole on gunungapi's body as place of its issue magma. Sizable crater so-called caldera. If caldera was filled by water that quite a lot mak will form vulkanik's crater or lake lake. Crater and caldera that at Indonesia, for example Crater Takubanperahu (West java), Tengger's crater (Intermediate java), and Batur's Mountain Caldera (Bali).