A non-example of magma would be water. Magma refers specifically to molten rock beneath the Earth's surface, while water is a liquid compound composed of H2O molecules.
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Lava
Sulfur is not magma
lava
Magma
A type of rock group that forms from the solidification of magma is indigenous rocks. One example of this is sulphur.
Wind is a non example of calcium.
Kilauea is a shield volcano fed by gas-poor basaltic magma. It is the gas in the magma that makes eruptions explosive. Kilauea has occasionally produced explosive eruptions when magma cam in contact with water.
The explosive force of violent eruptions is driven by gas trapped in the magma under pressure. Mafic magma often has a relatively low gas content and so usually erupts in a non-explosive or mildly explosive.
Watch out for that magma!
Lava
Magma
Mafic magma can be involced in both explosive and non-explosive eruptions.
Non-explosive volcanoes will have low concentrations of gas in the magma.
Granite