The crackling of the volcano,
volcano eruption is not an exact period. Depending on the internal pressure. Properties and the amount of crushed stone niche magma. However, geologists can make a rough prediction. By analyzing the frequency of seismic. The severity of the earthquake The acidity of the water due to high temperature magma minerals dissolve. And abnormal animal behavior at nine volcanic eruptions, violent volcanic eruptions occur. When basalt magma rises up from the floor buoyant asthenosphere. Earth's tectonic plates, which are made of granite fused into a granite magma. Push to bend in the face of the earth (Figure 9) the pressure of the hot gas pressure bomb crater. Spray, dust, volcanic ash (Pyroclastic flow), which has Threat heated to 900 degrees Celsius to the atmosphere (Figure 9 b) and falling deposits at the volcano (Figure 9), both lava flows and debris. falling deposits Make the area around the crater is heavy. He sank into a basket-shaped volcano (Caldera) Over time, rain water collection. Causing the lake (Figure 9 below).
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