A/an __________ __________ Is a Small Volcano Composed of Pyroclastic

Q28: Typical granitic magma contains _ silica and

Q29: Granitic magma contains up to _ percent

Q30: The most catastrophic volcanic explosions occur when

Q31: Explosively erupted rock particles or magma form

Q32: Pyroclastic bombs, cinders, and ash:<br>A) flow gently

Q34: Magma production occurs through _ _ _

Q35: Lava and rock fragments commonly erupt from

Q36: Dated rocks and zircon crystals suggest that

Q37: As lava cools and solidifies from the

Q38: Mount St. Helens in the state of