Found this neat little experiment
here. If anyone tries it, please let me know how it goes...
| This is a model of how volcanoes work. |
- Put some wax in the bottom of a fireproof glass container, allow to harden.
- Add a layer of sand on top of the wax.
- Fill up the remainder with cold water.
- Then carefully heat the bottom.
- Eventually, the wax underneath starts to boil (representing the molten rocks under the Earth's crust) and it begins to lift the whole landscape above in a dome shape.
- Soon the pressure becomes too much and at the weakest point, where the sand has bubbles, the hot wax shoots out in a lovely volcanic explosion. The entire wax reservoir empties and you get a lovely effect of a flattened top as well, representing how material from the volcanic explosion forms a layer of ash in the atmosphere.
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Neat :)
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