why does molten lava freeze as it moves further from a volcano
2006-11-23 08:45:22 · 10 answers · asked by gramatin24 2 in Science & Mathematics ➔ Earth Sciences & Geology
it becomes lava ounce it leaves the volcano, befor that its magma. As it cools(dose not freez) it takes the shape of what it ounce was, stone/rock.
Depending on how quick it cools depends on what typ of rock it becomes, fast cooling its called metamorphic rock, slow cooling its ignious rock
2006-11-24 05:03:56 · answer #1 · answered by Brad 5 · 2⤊ 0⤋
Lava is molten rock. As it travels further from its central hot source (the vent of the volcano) it cools. As it cools the temperature of the lava falls below that required to keep it in a molten state, therefore it solidifies again - or freezes as you put it.
2006-11-24 06:20:19 · answer #2 · answered by Anonymous · 1⤊ 0⤋
It doesn't necessarily "freeze" as you say. It cools off because it loses the heat and gases it once had as magma beneath the surface. The lava is molten rock, so eventually it must become solid rock again. It's a little like melted chocolate when you pour it out of the pan - It begins to harden back into a solid because it loses heat.
2006-11-23 16:06:19 · answer #3 · answered by Anonymous · 1⤊ 0⤋
The lava doesn't "freeze" as such but cools, all rock is formed from lava and when it comes out of the volcano it has gone from say 500 C to like 30 C so there is rapid heat loss out of the lava, and depending on how quickly it cools determines what kind of rock it makes, because it creates different crystal sizes, the bigger the crystals the slowr the rock cooled eg. granite has large crystals so cooled slowly where as obsidian has no crystals at all so cooled very quickly. Hope that it helps you out!
2006-11-24 22:44:44 · answer #4 · answered by Anonymous · 1⤊ 1⤋
The molten lava solidifies because of the lost of heat energy as it moves further away from the hot centre of the volcano.
E.g. pour a glass of water onto the floor in the height of winter. The water solidifies as heat is lost from the water.
2006-11-26 04:54:21 · answer #5 · answered by Kemmy 6 · 1⤊ 0⤋
lava is molten rock/minerals, it is fluid because of the extreem heat and pressure that is generated within the core of the earth.
when it is ejected from the volcano it is removed from the source of heat therefore it cools and becomes solid.
2006-11-23 20:58:11 · answer #6 · answered by bobster_rs 2 · 1⤊ 0⤋
the melting point is very high and the heat loss is very rapid as the lava flows away from the volcano to cooler surroundings
2006-11-23 08:49:13 · answer #7 · answered by ustaadji 2 · 2⤊ 0⤋
when it reaches the middle way down
2006-11-23 12:43:07 · answer #8 · answered by `Avenging~ghetto~bird` 3 · 0⤊ 1⤋
when it touchs air it can harden and water
2006-11-24 05:58:25 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Are you serious?
2006-11-26 07:36:16 · answer #10 · answered by Spanner 6 · 0⤊ 0⤋