Direction: Write T if the statement is true. If false, change the underlined word or phrase to make it correct.
______1. Volcanic eruptions are caused by magma (a mixture of liquid rock, cyrstal and dissolved gas) expelled onto the Earth`s surface.
_____2. The amount of gas in a magma is related to the chemical composition of the magma.
_____3. Higher SiO2 (silica) content magmas have higher viscosity
_____4. Viscosity depends on primarily on the composition of the magma and temperature.
_____5. The composition of the gases in magma are mostly H2O (water vapor) & some C02 (carbon dioxide)

UNDERLINED WORD
1. magma
2.related
3.higher viscosity
4.composition of the magma and temperature.
5. H2O (water vapor) & some C02 (carbon dioxide)