_________ Eruptions Are Common First Phases in the Eruptions of Volcanoes

Q15: The formation of a giant continental caldera

Q16: A shield volcano has a great _.<br>A)height

Q17: The primary reason magma forms at subduction

Q18: _ in the Aegean Sea underwent an

Q19: The volcanic explosivity index (VEI)measures size of

Q21: The three Vs of volcanology are _.<br>A)viscosity,volatiles,velocity<br>B)viscosity,volatiles,volume<br>C)viscosity,velocity,volume<br>D)volatiles,volume,variability<br>E)volatiles,velocity,variability

Q22: The most peaceful eruptions are _.<br>A)Icelandic type

Q23: The most abundant dissolved gas in magmas

Q24: Magma rising in a subduction zone tends

Q25: The presence of water _ the melting