Magma, lava and lahar

Magma is a material made in the earth's crust (plates tektonik) form of the fluorescent material in the mud temperature is very high (up to 1000 degrees Celsius). Occur as a result of friction / collision tektonik two plates, resulting in high temperatures and form the kitchen magma pushing upwards and can bring the volcano. Here is the image formation process and magma volcano.

Lava is magma that comes from the belly of the earth / volcano due to an increase in activity vulkanik in the volcano. Lava can be out of fluid flowing down the mountain slope to a place far away in the valley, magma can also come out and stayed around the top of the volcano and formed lava dome (dome) so that the volcano is more visible (eg on the mount Merapi in Central Java) .

Lahar is lava mixed with water (either rain or other waters such as lakes in the vicinity of the mountain) so it becomes saturated and forms a flow with high-speed glide down the slopes to distances of tens of kilometers. When the lava is still hot water mixed, or a new kitchen out of the magma post erupsi then the hot lava. Conversely when the lava has buried long in the mountain slopes after erupsi ago mixed water in the wet season it will produce the flow of cold lava. Second type lava above have the same risk of post-disaster on the mountain erupsi fire that caused many victims of the soul