Friday, March 27, 2009

The Volcano

A couple days ago, a real volcano erupted in Alaska. It wasn't as big as the eruption of Mt. Vesuvius on Pompeii, but it was good enough. We saw a few pictures online but then the camera on the volcano went out.
So then we decided to make our own volcano. We used mud from our yard and put a bottle in the middle for the hole. We covered up the bottle but not the hole on top. We then poured in vinegar, and then added a little bit of baking soda. Then it made something fizzy. It was carbon dioxide. But it looked like the volcano was erupting because it came out of the hole on the top and went down the side of the volcano.
I learned that magma is another name for lava. And there are three types of rocks: igneous, sedimentary, and metamorphic. Volcanos are igneous rocks.
Volcanoes are really cool. We still have the volcano that we made outside on our porch. We can make it erupt again if we want.

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